Show HN: Nash, I made a standalone note with single HTML file https://ift.tt/VuIAPrC

Show HN: Nash, I made a standalone note with single HTML file Hello HN, I hope it will posted as well. I made a note in single html file. This does not require a separate membership or installation of the software, and if you download and modify an empty file, you can modify and read it at any time, regardless of online or offline. It can be shared through messengers such as Telegram, so it is also suitable to share contents with long articles and images. It is also possible to host and blog because it is static html file content. https://ift.tt/uLDGbYp March 14, 2025 at 07:21AM

Show HN: Kill SaaS with Open Source https://ift.tt/arBPtuY

Show HN: Kill SaaS with Open Source KillSaaS is my answer to subscription software in the AI era. I'm building this because I believe small teams can use modern AI tools to create free alternatives to giants like Figma and DocuSign in weeks, not years. We're creating a platform where developers vote on which SaaS to replace, then build it together as open source. wdyt? https://ift.tt/SFv1kD2 March 16, 2025 at 02:50AM

Show HN: Basic Memory – Build a knowledge graph from Claude conversations https://ift.tt/Zk4T6hI

Show HN: Basic Memory – Build a knowledge graph from Claude conversations Basic Memory is an open-source tool that enables Claude to build and navigate a persistent knowledge graph based on your conversations. It solves the problem of lost context in AI interactions by storing knowledge in standard Markdown files on your computer. I built this because I found myself constantly repeating information to LLMs and wanted a system where my knowledge grew naturally through conversations while maintaining complete control over my data. Demo video: https://ift.tt/Wro260L Key features: - Continue conversations exactly where you left off without repetition - All knowledge stays in local Markdown files you can edit anytime - Works with Claude Desktop via the Model Context Protocol - Seamless integration with Obsidian for visualization and editing - Fully open source (AGPL) The system works by creating structure from simple markdown patterns: - Observations with categories: `- [category] fact #tag` - Relations between documents: `- relation_type [[WikiLink]]` or plain `[[Wikilinks]]` - These patterns emerge naturally during conversations When you chat with Claude, you can simply say "Let's continue our conversation about X" and it will build context from your knowledge base, without needing to upload files every time. GitHub: https://ift.tt/zl2Jh7p Docs: https://ift.tt/ZilP43J Website: https://ift.tt/ivmG9A3 Requires Claude Desktop or other MCP host and Python 3.12+ I'd love feedback from the HN community, particularly from those interested in knowledge management or AI applications. https://ift.tt/zl2Jh7p March 15, 2025 at 11:49PM

Show HN: Web Audio Spring-Mass Synthesis https://ift.tt/0UlPEAy

Show HN: Web Audio Spring-Mass Synthesis Hi, I'm the author of this little Web Audio toy which does physical modeling synthesis using a simple spring-mass system. My current area of research is in sparse, event-based encodings of musical audio ( https://blog.cochlea.xyz/sparse-interpretable-audio-codec-pa... ). I'm very interested in decomposing audio signals into a description of the "system" (e.g., room, instrument, vocal tract, etc.) and a sparse "control signal" which describes how and when energy is injected into that system. This toy was a great way to start learning about physical modeling synthesis, which seems to be the next stop in my research journey. I was also pleasantly surprised at what's possible these days writing custom Audio Worklets! https://blog.cochlea.xyz/string.html March 15, 2025 at 02:57AM

Show HN: Psyllium, a Ruby Gem to make Fibers behave more like Threads https://ift.tt/kZtDHCf

Show HN: Psyllium, a Ruby Gem to make Fibers behave more like Threads Hi everyone! I created this small Ruby Gem to add some convenient methods to the Fiber class to make it easier to use in the same way a Thread object can be used. This was born out of my frustration that the current implementation of the Fiber class makes it difficult to retrieve the final value of a block passed to a Fiber, especially when creating a fiber via the `schedule` class method. I appreciate any feedback anyone has. https://ift.tt/djWysTY March 15, 2025 at 12:09AM

Show HN: OCR Benchmark Focusing on Automation https://ift.tt/UVXqyzC

Show HN: OCR Benchmark Focusing on Automation OCR/Document extraction field has seen lot of action recently with releases like Mixtral OCR, Andrew Ng's agentic document processing etc. Also there are several benchmarks for OCR, however all testing for something slightly different which make good comparison of models very hard. To give an example, some models like mixtral-ocr only try to convert a document to markdown format. You have to use another LLM on top of it to get the final result. Some VLM’s directly give structured information like key fields from documents like invoices, but you have to either add business rules on top of it or use some LLM as a judge kind of system to get sense of which output needs to be manually reviewed or can be taken as correct output. No benchmark attempts to measure the actual rate of automation you can achieve. We have tried to solve this problem with a benchmark that is only applicable for documents/usecases where you are looking for automation and its trying to measure that end to end automation level of different models or systems. We have collected a dataset that represents documents like invoices etc which are applicable in processes where automation is needed vs are more copilot in nature where you would need to chat with document. Also have annotated these documents and published the dataset and repo so it can be extended. Here is writeup: https://ift.tt/HYWFhLM Dataset: https://ift.tt/maULqoy Github: https://ift.tt/UsBieTE Looking for suggestions on how this benchmark can be improved further. https://ift.tt/HYWFhLM March 13, 2025 at 02:19AM

Show HN: Psychedelic animation generator; (p)art of your next trip https://ift.tt/imtNKw6

Show HN: Psychedelic animation generator; (p)art of your next trip Sharing an open source project for creating psychadelic art -- using liquid motion, distorted shapes, shadows and light. This tool works in real-time in the browser using webgl shaders. This project was inspired by drum & bass / acid techno music, and 90s rave posters. Use this to create art for a music video, concert posters, stylized animations in creative projects, or simply to enjoy alongside some fine music. Use the detailed control menu (top-right) to set a custom canvas size, adjust animation speed, control pattern and colours, etc... You can export your creation as an image or video afterwards. How this works: this tool uses WebGL shaders to create a real-time animation (with a trippy liquid / shadow / blur aesthetic). The animation is created using a random seed position and mixes in random noise (fractal brownian motion, 3D simplex noise), so each time you re-run it you're creating a unique piece of art. Github repo: https://ift.tt/4sz5p0n ----- I hope you enjoy the visuals. I'd love to hear any feedback or suggestions. https://ift.tt/7GUrySR March 14, 2025 at 04:56AM

Show HN: Bypass DEI Censorship https://ift.tt/W50v3Td

Show HN: Bypass DEI Censorship https://ift.tt/h6MGYP1 March 14, 2025 at 02:53AM

Show HN: Tinygym: RL in Tinygrad https://ift.tt/THy1eE4

Show HN: Tinygym: RL in Tinygrad Hi there, the repo speaks for itself. Feedback & questions are welcome https://ift.tt/mGX5Cgc March 13, 2025 at 11:31PM

Show HN: Simple Turn Servers for WebRTC – 5GB Free, $0.20/GB After https://ift.tt/XEeHrW9

Show HN: Simple Turn Servers for WebRTC – 5GB Free, $0.20/GB After https://turnwebrtc.com/ March 13, 2025 at 04:27AM

Show HN: CatCompass – An app for tracking stray cats https://ift.tt/yOsuli0

Show HN: CatCompass – An app for tracking stray cats https://catcompass.com March 13, 2025 at 03:40AM

Show HN: Time Portal – Get dropped into history, guess where you landed https://ift.tt/bNFEPC8

Show HN: Time Portal – Get dropped into history, guess where you landed Hi HN! I love imagining the past, so I made Time Portal, a game where you are dropped into a historical event and see AI video footage from that moment. You have to guess where you are in time and on the map. It’s like GeoGuessr (and heavily inspired by it!) but for historical events. The videos are all created with AI. It’s a pipeline of Flux (images), Kling (video), and mmaudio (audio). The videos aren’t always historically accurate to the last detail. They might incorporate elements of folklore or have details from popular beliefs about the way things looked rather than the latest academic research on how they looked. I’m thinking a lot about how to make the game more interactive. One thing that makes Geoguessr so fun for me is that you can move infinitely and always find more details to help you pinpoint the location. I want Time Portal to have a similar quality. I have a few ideas to try soon that will hopefully make the game more interactive and infinite. https://ift.tt/VSK6NTW March 13, 2025 at 01:53AM

Show HN: Daylight – track sunrise / sunset times in your terminal https://ift.tt/6OpYaN4

Show HN: Daylight – track sunrise / sunset times in your terminal https://ift.tt/Dgw8WHa March 9, 2025 at 05:51PM

Show HN: AI-powered root cause analysis with the Five Whys method https://ift.tt/KhWwTvk

Show HN: AI-powered root cause analysis with the Five Whys method https://ift.tt/ardsPuM March 12, 2025 at 07:16AM

Show HN: We built a Plug-in Home Battery for the 99.7% of us without Powerwalls https://ift.tt/LBGrnVc

Show HN: We built a Plug-in Home Battery for the 99.7% of us without Powerwalls Hi HN! I’m Cole Ashman, founder of Pila Energy. I’ve spent my career working on home energy systems—first as an engineer on Tesla’s Powerwall, where I focused on the Backup Gateway, Solar Inverter, and metering systems. More recently, I led Product at SPAN, where we built the Smart Electrical Panel and integrated with most major home solar, EV, and battery systems. Pila ( https://pila.energy/ ) is a home battery that plugs into a standard wall outlet, provides smart backup power, energy shifting, and grid services. It’s more than a power bank—it’s a distributed energy system that can scale across multiple rooms, entire buildings, and work together in real time as a coordinated system. We built Pila to be local first with an open API to allow developers to build use cases on top of our hardware (Home Assistant, etc). Big batteries like Tesla Powerwall and Enphase are great if you own a home and can afford a $10K+ electrical project, but they require permanent installation, electricians, and panel upgrades—which makes them inaccessible for renters, apartments, and cost-conscious homeowners. Over 50% of the cost of installing a Powerwall isn’t even the battery itself—it’s soft costs: labor, permitting, etc. We wanted to create an entry point for more people to access energy security at home. How does it work? Plug Pila into any 120V wall outlet, and power passes through to connected devices and appliances. The inverter, LFP battery, BMS, grid disconnection, controller, and wireless connectivity are all built in. (details at https://ift.tt/8MOVGFA ) When an outage happens, the onboard inverter detects the power loss within 20ms and automatically disconnects from the grid (islanding). Whether you’re home or away, backup kicks in instantly. A built-in cellular radio ensures you get a notification even if your home WiFi is out. Pila is 1.6kWh. That will backup a standard fridge for over a day. One key challenge we faced with a distributed architecture was coordination between batteries, for things like solar-following and managing real-time draw from your utility connection. Unlike large garage systems, where you can run a wired CAN bus, our batteries are spread across the home. We’re solving this with a sub-GHz wireless mesh network—self-healing, coordinator-less, and designed to make setup and expansion as simple as plugging in another unit. Long-term, we’d love to open up this protocol to provide a more reliable communication layer for energy products in noisy built environments—reducing reliance on consumer Wi-Fi. We want to deliver the value you’d expect from a whole-home battery like Powerwall, in a plug-in format. That means going beyond a basic lead acid UPS with real home energy management, useful insights about power use, power larger loads like sump pumps, and even deliver grid services. Most portable batteries are missing the functionality that makes a home battery useful: no bidirectional power, no integration with solar or smart home systems, and no ability to manage home energy dynamically. They tend to be boxy, ruggedized, meant to be moved around, not seamlessly integrated into your living space. On top of that, many use e-mobility battery chemistries, which are great for delivering high power on demand but wear out faster when cycled daily for home energy use. As a renter myself, I started Pila because these awesome energy products aren’t accessible enough. And frankly, generators are loud, expensive, and a pain to deal with. Even many Powerwall owners I’ve talked to say they really care about keeping the fridge, WiFi, and a sump pump running—so why does energy resilience have to be so complicated and expensive? As the grid struggles to keep up with demand, we believe modular, renter-friendly batteries can make home energy resilience more accessible. What's been your experience with home batteries? What recent power outages have you had, and how were you affected? https://pilaenergy.com March 11, 2025 at 09:18PM

Show HN: Seven39, a social media app that is only open for 3 hours every evening https://ift.tt/oG0Y5Sb

Show HN: Seven39, a social media app that is only open for 3 hours every evening I built this site as a quick test if a time boxed social media experience feels better than an endless one. So far I've just been using it with friends and it feels nice, but it seems like it is time to bring it to a larger audience. Let me know what you think! It is just based on EST for now, sorry. https://www.seven39.com March 11, 2025 at 06:35AM

Show HN: Hot Design – Like Hot Reload, but a Runtime Visual Designer https://ift.tt/JsGporW

Show HN: Hot Design – Like Hot Reload, but a Runtime Visual Designer Hi HN, Nick here, from the open-source Uno Platform team. You are likely familiar with Hot Reload , pioneered by Flutter. We’ve taken that concept further and built Hot Design , let me introduce it to you. Architecturally, Hot Design idea is simple: 1. In your IDE, pause the live, running app at runtime, turning it into a designer. 2. Modify the UI directly on the designer —add elements, adjust layouts, tweak bindings etc. 3. Resume the app without restarting or losing state. We built Hot Design to address the frustration of slow iteration cycles when building and tweaking UI or debugging data bindings in apps targeting multiple platforms. Here’s a detailed explanation and a video of Hot Design in action: https://ift.tt/BxAPM91 I can see potential criticism: It will get killed by AI, it’s another abstraction over code, it is .NET etc. Happy to respond to those comments if they come; we put a lot of thought into Hot Design and would love to hear it challenged! Nick https://ift.tt/BxAPM91 March 11, 2025 at 07:40AM

Show HN: Chrome Extension for ChatGPT to organize conversations into folders https://ift.tt/fHV5lAX

Show HN: Chrome Extension for ChatGPT to organize conversations into folders Hi HN, I'm Alex, a full-stack developer from Toronto, Canada. I recently built a Chrome extension that organizes ChatGPT conversations into folders, allowing users to sort and save important information for easy reference. The idea for this extension came from a friend who highlighted the lack of good (and affordable) ChatGPT organizers. Many existing tools were either low-quality or overpriced, so I decided to create one that was both reliable and accessible. I built the extension using plain JavaScript and developed a backend with Express to handle Google authentication. For storage, I used MongoDB, enabling all users with an account to save their folder structures and conversation data. Initially, I planned to charge $5 per month to cover costs since originally this extension was intended as a portfolio project addressing a real-world problem. However, just as I finished the main functionality and was about to implement payments, ChatGPT announced an official feature similar to one my extension was providing. Rather than continue competing in a market with an "official" solution, I decided to stop development. But I didn't want my work to go to waste, so I chose to release it for free, motivated by a desire to share it with the community. I made some changes to eliminate the backend. Now the extension stores all folder structures and content locally in Chrome storage. Luckily, I had some old code to reuse for this. The extension is now live on the Chrome Web Store. This project introduced me to a lot of new challenges with technologies I hadn’t used before, but I’m grateful for the experience and the skills I gained along the way. I hope you find it useful! Links to the extension and its website: https://ift.tt/cgGKEzn... https://ift.tt/2w5heYB If you have any questions or suggestions, feel free to reach out in the comments or via email at georgepozdman@gmail.com. https://ift.tt/2w5heYB March 11, 2025 at 04:41AM

Show HN: I built a Figma plugin for quick data calculations https://ift.tt/3H4DiP7

Show HN: I built a Figma plugin for quick data calculations I lead design on a B2B SaaS product. It's quite data-heavy in places. Using placeholder content in data tables, checkout summaries and dashboards is a big no-no for us. It might seem like using random numbers saves time at first, but sooner or later there's documentation to write and plenty of clarifications to be made. It throws off customers during interviews – "hey, that's not really my sales target!". It confuses stakeholders at review time– "what's this data point supposed to be?" I built a Figma calculator plugin for my team so that they spend less time doing mental maths. It calculates sums, differences averages and percentages, and makes it easy to use real-looking data in designs. https://ift.tt/TM158L0 March 10, 2025 at 07:11PM

Show HN: I built a free SVG Web site https://ift.tt/hTLIUPK

Show HN: I built a free SVG Web site This has been an experiment to see if I could create everything using scripts and AI. If AI couldn't do it I'd get it to create the code such as API calls and so on. This websvg.com site was completely created using these AI tools. Including the DNS being applied, the Cloudflare Pages were automatically set up and the the web site was a Svelte 5 application generated by v0.dev and Cursor. Every image was generated in Midjourney and converted to SVG. I have now taken all of these scripts and can create a similar landing or directory site in less than a minute, provided I have the data. Anyway it's been fun. https://websvg.com/ March 10, 2025 at 01:50AM

Show HN: Buildless CJS+ESM+TS+Importmaps for the Browser https://ift.tt/0olzJYp

Show HN: Buildless CJS+ESM+TS+Importmaps for the Browser https://ift.tt/zQX8HnF March 10, 2025 at 12:42AM

Show HN: Evolving Agents Framework https://ift.tt/RnC5Z1w

Show HN: Evolving Agents Framework Hey HN, I've been working on an open-source framework for creating AI agents that evolve, communicate, and collaborate to solve complex tasks. The Evolving Agents Framework allows agents to: Reuse, evolve, or create new agents dynamically based on semantic similarity Communicate and delegate tasks to other specialized agents Continuously improve by learning from past executions Define workflows in YAML, making it easy to orchestrate agent interactions Search for relevant tools and agents using OpenAI embeddings Support multiple AI frameworks (BeeAI, etc.) Current Status & Roadmap This is still a draft and a proof of concept (POC). Right now, I’m focused on validating it in real-world scenarios to refine and improve it. Next week, I'm adding a new feature to make it useful for distributed multi-agent systems. This will allow agents to work across different environments, improving scalability and coordination. Why? Most agent-based AI frameworks today require manual orchestration. This project takes a different approach by allowing agents to decide and adapt based on the task at hand. Instead of always creating new agents, it determines if existing ones can be reused or evolved. Example Use Case: Let’s say you need an invoice analysis agent. Instead of manually configuring one, our framework: Checks if a similar agent exists (e.g., a document analyzer) Decides whether to reuse, evolve, or create a new agent Runs the best agent and returns the extracted information Here's a simple example in Python: import asyncio from evolving_agents.smart_library.smart_library import SmartLibrary from evolving_agents.core.llm_service import LLMService from evolving_agents.core.system_agent import SystemAgent async def main(): library = SmartLibrary("agent_library.json") llm = LLMService(provider="openai", model="gpt-4o") system = SystemAgent(library, llm) result = await system.decide_and_act( request="I need an agent that can analyze invoices and extract the total amount", domain="document_processing", record_type="AGENT" ) print(f"Decision: {result['action']}") # 'reuse', 'evolve', or 'create' print(f"Agent: {result['record']['name']}") if __name__ == "__main__": asyncio.run(main()) Next Steps Validating in real-world use cases and improving agent evolution strategies Adding distributed multi-agent support for better scalability Full integration with BeeAI Agent Communication Protocol (ACP) Better visualization tools for debugging Would love feedback from the HN community! What features would you like to see? Repo: https://ift.tt/T0C5E1Q https://ift.tt/T0C5E1Q March 9, 2025 at 10:21PM

Show HN: Math expressions and graph traversals of the Chinese language https://ift.tt/4QkEmHf

Show HN: Math expressions and graph traversals of the Chinese language I've been working on a free Chinese language learning tool for awhile now. The main insight is that Chinese characters are used together to form words, and that this allows for a way of quickly getting information about related words and characters. By learning words and characters in a chain in this way, I've found it easier not to get lost in the long list of characters. In addition, I've found it helpful to break down characters into their components to find pronunciation clues, which can sometimes be hidden in components of components. The math feature uses a similar tree traversal mechanism to allow expressions like 酒-氵+各 = 酪 or 亻+寸+广+仌+⺆ = 腐. As it's 2025, it also has some AI features. Notably: * allowlisted users can get Chinese or English text explanations that span more than just a word, but that integrate with the other features, like flashcard creation and in-browser text-to-speech. * files and images (using the browser's `capture` mechanism to operate cameras) can also be processed similarly. * example sentences were generated and cached using AI The site is a PWA built with vanilla JS (because I like pain), with Cytoscape and D3 for various rendering tasks. The backend was built with Firebase, with Genkit + Gemini 2.0 providing the AI integration. Feel free to check it out: https://hanzigraph.com https://ift.tt/qQRf0Kc March 9, 2025 at 12:30AM

Show HN: Simple Certificate Decoder Tool https://ift.tt/wXPp6nz

Show HN: Simple Certificate Decoder Tool Sometimes I need to quickly check certificates, especially key details like SANs, expiration dates, issuer info, etc. I know there are dozens (if not hundreds) of certificate decoders out there already, but I built my own—mostly for fun, but also because I prefer tools that are clean, simple, and straightforward to use. Would appreciate your feedback! https://ift.tt/e8vpGho March 8, 2025 at 11:09PM

Show HN: Open-Source DocumentAI with Ollama https://ift.tt/QVyxmT0

Show HN: Open-Source DocumentAI with Ollama https://rlama.dev/ March 8, 2025 at 07:42AM

Show HN: Ming-wm: A 100% keyboard-operated desktop environment in Rust https://ift.tt/nKBse0A

Show HN: Ming-wm: A 100% keyboard-operated desktop environment in Rust https://ift.tt/PwaNXUk March 8, 2025 at 12:24AM

Show HN: I Built a Telegraph Simulator https://ift.tt/WBRqdeL

Show HN: I Built a Telegraph Simulator https://ift.tt/DZIwsMT March 5, 2025 at 03:30AM

Show HN: Ask AI Paul Graham (Open Sourced) https://ift.tt/csQo2pI

Show HN: Ask AI Paul Graham (Open Sourced) https://ift.tt/VCordRU March 8, 2025 at 12:10AM

Show HN: Open-source, native audio turn detection model https://ift.tt/Rclh9tS

Show HN: Open-source, native audio turn detection model https://ift.tt/5I1dz47 March 6, 2025 at 11:50PM

Show HN: DataBridge: Rule-Based Metadata Extraction, PII Redaction, and More https://ift.tt/LfJwoKi

Show HN: DataBridge: Rule-Based Metadata Extraction, PII Redaction, and More https://ift.tt/J2ijNop March 6, 2025 at 08:12PM

Show HN: I made an app to like or dislike famous quotes https://ift.tt/9w5Ukct

Show HN: I made an app to like or dislike famous quotes https://ift.tt/ORzD1kt March 4, 2025 at 03:25AM

Show HN: Bayleaf – Building a low-profile wireless split keyboard https://ift.tt/xAXGj4u

Show HN: Bayleaf – Building a low-profile wireless split keyboard Hey HN, I built a wireless, split, ultra-low profile keyboard from scratch called Bayleaf. As a beginner I learned all things electronics, PCB-building, designing for manufacturing, and many other hardware-related skills to put this together. This case study dives into the build process and of course the final result, hope you enjoy! https://ift.tt/abm7zeq March 4, 2025 at 08:30PM

Show HN: We created a music MMO that can scale 10x of Roblox https://ift.tt/4vruF0I

Show HN: We created a music MMO that can scale 10x of Roblox https://ift.tt/zdQA3oG March 5, 2025 at 12:35AM

Show HN: Time travel debugging AI for more reliable vibe coding https://ift.tt/pFtTuwo

Show HN: Time travel debugging AI for more reliable vibe coding Hi HN, I'm the CEO at https://replay.io . We've been building a time travel debugger for web apps for several years now (previous HN post: https://ift.tt/IOSDfjP ) and are combining our tech with AI to automate the debugging process. AIs are really good at writing code but really bad at debugging -- it's amazing to use Claude to prompt an app into existence, and pretty frustrating when that app doesn't work right and Claude is all thumbs fixing the problem. The basic reason for this is a lack of context. People can use devtools to understand what's going on in the app, but AIs struggle here. With a recording of the app its behavior becomes a giant database for querying using RAG. We've been giving Claude tools to explore and understand what happens in a Replay recording, from basic stuff like seeing console messages to more advanced analysis of React, control dependencies, and dataflow. For now this is behind a chat API ( https://ift.tt/mhbc7CV ). We recently launched Nut ( https://nut.new ) as an open source project which uses this tech for building apps through prompting (vibe coding), similar to e.g. https://bolt.new and https://v0.dev . We want Nut to fix bugs effectively (cracking nuts, so to speak) and are working to make it a reliable tool for building complete production grade apps. It's been pretty neat to see Nut fixing bugs that totally stump the AI otherwise. Each of the problems below has a short video but you can also load the associated project and try it yourself. - Exception thrown from a catch block unmounts the entire app: https://ift.tt/1dycGAE - A settings button doesn't work because its modal component isn't always created: https://ift.tt/tzpombc - An icon is really tiny due to sizing constraints imposed by other elements: https://ift.tt/BSVG39g - Loading doesn't finish due to a problem initializing responsive UI state: https://ift.tt/mQdhjcs - Infinite rendering loop caused by a missing useCallback: https://ift.tt/xA9P16D Nut is completely free. You get some free uses or can add an API key, and we're also offering unlimited free access for folks who can give us feedback we'll use to improve Nut. Email me at hi@replay.io if you're interested. For now Nut is best suited for building frontends but we'll be rolling out more full stack features in the next few weeks. I'd love to know what you think! https://nut.new March 5, 2025 at 12:23AM

Show HN: FlakeUI https://ift.tt/43XkAHc

Show HN: FlakeUI https://ift.tt/UVsKTfo March 3, 2025 at 10:59AM

Show HN: Generating Random Art in Haskell https://ift.tt/3VszUda

Show HN: Generating Random Art in Haskell https://ift.tt/Rj8QSU4 March 3, 2025 at 11:53PM

Show HN: A Transformer model that preserves logical equivalence https://ift.tt/bwEX1x5

Show HN: A Transformer model that preserves logical equivalence https://ift.tt/cOGMVAR March 3, 2025 at 02:11AM

Show HN: Mmar – open-source, zero-dependancy, cross-platform HTTP tunneling https://ift.tt/b17Vf5W

Show HN: Mmar – open-source, zero-dependancy, cross-platform HTTP tunneling Hey HN! For the past couple of months, I've been working on and off on a cool project I'm excited to share. mmar (pronounced "ma-mar") is an open-source, zero dependency, cross platform and self-hostable HTTP tunnel built in Go. It allows you to easily expose your localhost to the world on a public URL. You can easily create an HTTP tunnel right away for free on a randomly generated subdomain on "*.mmar.dev" if you don't feel like self-hosting. This isn't something new, in fact there's quite a few of alternative HTTP tunneling tools out there. mmar is my attempt to optimize for a super easy developer experience and simplified implementation. None the less, I had a blast building it and I think developers could find it pretty useful. Additionally, I documented the whole process of building mmar through devlogs. You can read about the thought process and implementation details here ( https://ift.tt/pjOmFrs ). If I would suggest one devlog to read, I highly recommend devlog 5 ( https://ift.tt/CKxbHqX ). I describe how I built a (very) basic DNS server just to run simulation tests for mmar (a bit of an overkill, but a fantastic learning experience). I dive deep into the DNS protocol and explain why I needed to implement it. Finally, I would love to hear your thoughts and feedback. If you try mmar out, let me know! https://ift.tt/XKvp956 March 3, 2025 at 01:28AM

Show HN: Fast Transition from Firefox to Librewolf https://ift.tt/G3EVSZd

Show HN: Fast Transition from Firefox to Librewolf After looking at various browser alternatives to Firefox (my daily driver for years), I decided to try LibreWolf and the transition was trivial on a Debian based system (by HN standards). My extensions even ran without logging in (YMMV). First install LibreWolf: sudo apt update && sudo apt install extrepo -y sudo extrepo enable librewolf sudo apt update && sudo apt install librewolf -y Second: After closing Firefox, copy Firefox profile (in ~/.mozilla/firefox/) to Librevox profile (in ~/.librewolf/). Note: I copied the profile into the default profile (as seen in about:profiles) not default-default. I then launched the profile and all my tabs were restored, bookmarks, logins, etc. I will update if something seems broken. March 2, 2025 at 11:44PM

Show HN: Schedual https://ift.tt/cnlD8eb

Show HN: Schedual No nonsense tasks. https://schedual.app/ March 2, 2025 at 01:10AM

Show HN: LLM Token Visualizer – How big is 128k token input https://ift.tt/JtLbhYu

Show HN: LLM Token Visualizer – How big is 128k token input https://ift.tt/M62q9Hs March 2, 2025 at 01:14AM

Show HN: Open-source tool that send UI feedback with context https://ift.tt/Cqvi27h

Show HN: Open-source tool that send UI feedback with context https://ift.tt/uksr9E8 March 2, 2025 at 01:11AM

Show HN: I built an app to convert ChatGPT Deep Research to PDFs with footnotes https://ift.tt/7QFy3mk

Show HN: I built an app to convert ChatGPT Deep Research to PDFs with footnotes Whilst ChatGPT Deep Research is very useful for generating in-depth reports, it's time consuming to copy, reformat the text (thousands of words) and clean referenced hyperlinks for use in a professional context. Out of frustration, I built deep research docs to help save time by automating the reformatting, cleaning links, footnote references, and conversion to shareable PDF format. Hopefully this helps you save time to focus on meaningful work. Let me know your feedback. https://ift.tt/1kQu4Zo March 1, 2025 at 06:22PM

Show HN: Torii – a framework agnostic authentication library for Rust https://ift.tt/CApP0re

Show HN: Torii – a framework agnostic authentication library for Rust https://ift.tt/kWTw47J March 1, 2025 at 04:46AM

Show HN: Find out if you qualify for an O-1 visa https://ift.tt/q5ElBmS

Show HN: Find out if you qualify for an O-1 visa https://o1pathways.com/ March 1, 2025 at 03:49AM

Show HN: Betting game puzzle (Hamming neighbor sum in linear time) https://ift.tt/9LSQAjd

Show HN: Betting game puzzle (Hamming neighbor sum in linear time) In Spain, there's a betting game called La Quiniela: https://ift.tt/KrUeApM Players predict the outcome of 14 football matches (home win, draw, away win). You win money if you get at least 10 correct, and the prize amount depends on the number of winners. Since all bets are public, the number of winners and the corresponding payouts can be estimated for each of the 3^14 possible outcomes. We can also estimate their probabilities using bookmaker odds, allowing us to compute the expected value for each prediction. As a side project, I wanted to analyze this, but ran into a computational bottleneck: to evaluate a prediction, I had to sum the values of all its Hamming neighbors up to distance 4. That’s nearly 20,000 neighbors per prediction (1+28+364+2912+16016=19321): S_naive = sum from k=0 to r of [(d! / ((d-k)! * k!)) * (q-1)^k] (d=14, q=3, r=4) This took days to run in my first implementation. Optimizing and doing it with matrices brought it down to 20 minutes—still too slow (im running it in GAS with 6 minutes limit). For a while, I used a heuristic: start from a random prediction, check its 28 nearest neighbors, move to the highest-value one, and repeat until no improvement is possible within distance 3. It worked surprisingly well. But I kept thinking about how to solve the problem properly. Eventually, I realized that partial sums could be accumulated efficiently by exploiting overlaps: if two predictions A and B share neighbors, their shared neighbors can be computed once and reused. This is achieved through a basic transformation that I implemented using reshape, roll, and flatten (it is probably not the most efficient implementation but it is the clearest), which realigns the matrix by applying an offset in dimension i. This transformation has two key properties that enable reducing the number of summations from 19,321 to just 101: - T(T(space, d1), d2) = T(T(space, d2), d1) - T(space1, d) + T(space2, d) = T(space1+space2, d) Number of sums would be the result of this expression: S_PSA = 1 + (d - (r-1)/2) * r * (q-1) I've generalized the algorithm for any number of dimensions, elements per dimension, and summation radius. The implementation is in pure NumPy. I have uploaded the code to colab, github and an explanation in my blog. Apparently, this falls under Hamming neighbor summation, but I haven't found similar approaches elsewhere (maybe I'm searching poorly). If you know or you've worked on something similar, I'd love to hear your thoughts! colab: https://ift.tt/pFVkozG... github: https://ift.tt/8qe3E9R blog: https://ift.tt/gzfQhmt... March 1, 2025 at 02:03AM

Show HN: News-briefing-generator – Local LLM-powered news digest https://ift.tt/ieEHB2m

Show HN: News-briefing-generator – Local LLM-powered news digest Hey HN, I created a tool to generate personalized news briefings from RSS/Atom feeds using local LLMs through Ollama. It currently works in two modes: fully automatic or with an interactive review where you can select which "main topics of the day" to include in your briefing. The result is a HTML document with summaries for each topic. https://ift.tt/zryDNqE February 28, 2025 at 10:45PM

Show HN: Wampy, interface addon for Linux-based Walkmans https://ift.tt/DNetQUr

Show HN: Wampy, interface addon for Linux-based Walkmans Wampy is an interface addon for modern Linux-based Walkmans, which allows you to switch between standard interface and custom one using hardware Hold switch. The project was born out of handful of standard UI nitpicks and "can I make a prettier UI?". There is no Rockbox port for my device (NW-A55), so I did a UI myself, unlocking and adding various features along the way, such as: - Winamp 2 skin support - Custom cassette skins - Digital clock skin ported from iPod Nano 7g - Audio amplification table editor for S-Master HX - All audio filters are available regardless of firmware - Per-song audio filter options - Standard interface enhancements (add clock and increase cover art size) - Low latency USB DAC module - FM radio on devices with FM chip and Walkman One (A40/50) The result covers 6 models, from cheapest NW-A30 to premium NW-WM1Z. Development process involved a lot of reverse engineering, digging into device internals and was pretty fun overall; there are links to development stories in README.md, describing how this or that feature was added. https://ift.tt/oRfIPyb February 27, 2025 at 11:37PM

Show HN: Ranked Search for Semi-Structured Data https://ift.tt/qNPSpAM

Show HN: Ranked Search for Semi-Structured Data We’ve been working on a search problem that requires querying both text and numbers simultaneously. For example, in a dataset of clothing items with descriptions and prices, a search for “slim pants for $20” should prioritize skinny jeans for $25 over slim pants for $50 because they are semantically similar and the price is closer. I’ve found that standard embedding models struggle with numerical ordering, while text-to-SQL methods rely on exact matches and often filter out too many results. To solve this, we built a system designed specifically for structured datasets like CSVs or tables. Here’s a demo link where you can upload a small CSV to try out (no login required): https://ift.tt/xD7rVp8 . Unlike most RAG approaches, we process each column independently, handling text with embeddings and numbers with custom scoring. When a user submits a query, we parse it into relevant fields—for instance, extracting “slim pants” as the description and “20” as the price. We then compute cosine similarity between the description embeddings and “slim pants” while also calculating the percent error between the user’s price input and the numerical field. These individual similarity scores are then combined across all columns to generate a final ranking. Right now, our system works best with well-structured data, so some preprocessing is often needed. We’re working on improving this by detecting and restructuring messy data automatically, such as pivoting columns or extracting attributes from large text fields. We’re also adding feedback mechanisms, like a thumbs up/down system, to refine future search results based on user input. I’d love to hear about your experiences with similar search challenges and would appreciate any feedback! https://ift.tt/xD7rVp8 February 27, 2025 at 11:27PM

Show HN: Simple website for training your ear https://ift.tt/AdcVkg8

Show HN: Simple website for training your ear If the experience is bad on mobile, try with headphones or on a PC / Mac. https://ift.tt/BUFuwCe February 27, 2025 at 12:56AM

Show HN: Instantly Translate Manga – TranslateManga https://ift.tt/XiCEdUA

Show HN: Instantly Translate Manga – TranslateManga Since I was young, I've loved anime, and over the years, manga has brought me joy, given me courage, and sparked excitement in my heart. However, as I read more, I realized that many of these manga weren't translated at all. I also came across some AI-based translation tools, but the results often fell short. So, I decided to create a tool that allows manga fans to read and enjoy their favorite manga, no matter the language or whether a translation team is available. This product has just been launched, and there are certainly areas that can be improved. However, with time, I'm confident it will only get better. You're welcome to try it out and share your valuable feedback! https://ift.tt/pKWLPyZ February 24, 2025 at 08:09PM

Show HN: I built a PR listener and ruleset to detect malicious code in CI/CD https://ift.tt/1Z0wakH

Show HN: I built a PR listener and ruleset to detect malicious code in CI/CD I built a GitHub app that detects it in pull requests, notifies or blocks them. Alongside it, I published a Semgrep ruleset for any stage of the CI/CD. I started this after getting frustrated by all the FUD around malicious code - lots of noise, little effort to solve it. Having said that, it's still a major attack vector - a stored RCE, with the codebase itself as the sink. Feedback is appreciated. The app, PRevent - https://ift.tt/R3AisjV The ruleset: https://ift.tt/G4y1e7n The research: https://ift.tt/cmRT4Nq... https://ift.tt/R3AisjV February 26, 2025 at 12:52AM

Show HN: Minimalist Travel Planner https://ift.tt/cJvSulB

Show HN: Minimalist Travel Planner I was tired of finding repetitive travel plans on ad-filled travel sites, so I made a minimal editable trip plan maker. https://triptip.cat/ February 25, 2025 at 08:21PM

Show HN: URnetwork – Decentralized VPN Replacement https://ift.tt/uKMAW9H

Show HN: URnetwork – Decentralized VPN Replacement I spent the last 1.5 years working out how to scale a decentralized network safely and efficiently to millions of users. URnetwork is a market for network capacity, where each connection races to find the best provider on the network. This means users have many IP addresses that continually cycle, and users can directly connect to each other, which is great for privacy when some minimum conditions are met. Because the world already has a bunch of hardware and network capacity that can be used, the challenges were to design a protocol to make it safe to use and participate, fast and reliable, and to set up the right encryption bar for safe peer to peer data. You can try the apps on iOS and Android and see if they work better than your current VPN. The source is here https://ift.tt/FD45skp About me, I was an early engineer at Palantir, former YC founder, and spent the last decade building global infrastructure. I'm interested in truly free, transparent, private, available, and secure networks that reward people to contribute what they have. Ease of use and safety to participate has been a big focus for me. https://ur.io/ February 25, 2025 at 02:47AM

Show HN: Electro – A hyper-fast Windows image viewer with a built-in terminal https://ift.tt/bNlpsXZ

Show HN: Electro – A hyper-fast Windows image viewer with a built-in terminal This is my first major OSS release! I was always so frustrated by how slow image viewers were on Windows so I built one from the ground up with Rust & Tauri v2.0! Electro also has a very unique feature: a built-in terminal. I was always mesmerised by merging CLI tools with GUI based systems and this is my first go at it! I have big plans on expanding the terminal functionality with built-in image editing commands, command chaining, file handling etc. https://ift.tt/LjaVkc1 February 25, 2025 at 02:20AM

Show HN: Toutui: A TUI Audiobookshelf Client for Linux (Written in Rust) https://ift.tt/1NXKZv6

Show HN: Toutui: A TUI Audiobookshelf Client for Linux (Written in Rust) These last weeks, I really enjoyed building a TUI audiobookshelf client for Linux (written in Rust and I used Ratatui for TUI). I'm happy to share with you the first version. With this app, you can listen to your audiobooks and podcasts (from an audiobookshelf server) while keeping your progress and stats in sync. All of this from your terminal :) Check out the GitHub page for a detailed presentation. Enjoy! https://ift.tt/qLTb2My February 24, 2025 at 11:37PM

Show HN: OmniTools–A Self-Hosted Suite of Open Source Tools for Everyday Tasks https://ift.tt/CXTMUi3

Show HN: OmniTools–A Self-Hosted Suite of Open Source Tools for Everyday Tasks It’s 2025, and somehow, there’s still no good self-hosted alternative to sites like ILoveIMG.com or OnlineTools.com... until now. OmniTools is here to fill that gap! It’s a free web-based, open-source self-hosted platform that brings together all your favorite online tools in one place—fully self-hosted and ad-free. Project: https://ift.tt/O0R6fe2 Why Omni Tools? Completely FREE & Open-Source – No hidden fees, ever. Self-Hosted – Keep control of your data, no tracking, no nonsense. All Your Favorite Tools in One Place – Image, coding, file utilities and more! Beta Version – Just launched, and I need your feedback to make it even better! https://ift.tt/O0R6fe2 February 23, 2025 at 08:58PM

Show HN: Mapping historical markers around the world https://ift.tt/GzTdMqV

Show HN: Mapping historical markers around the world I saw the 'map of torii' post yesterday and thought y'all might like to see the small app I've been working on that uses HMDB.org data to map historical markers around the world. HMDB has been aggregating markers for over 15 years and back when I was living out of my van and traveling full-time I wanted to get notified whenever I passed one, so I built a mobile app around that. I think historical markers are underrated - as a physical marker they make history tangible. Rather than reading about history from a classroom, you get the opportunity to see and engage with it at the source. If you're already nearby, they are often worth the stop to learn more. Since releasing the iOS app a few years ago, I've been able to enhance the markers with summaries (which makes reading the content a lot more palatable), and converting them to audio, so you can listen to markers when you're driving. Yesterday I officially released the android app, with the same features as the iOS app. https://ift.tt/hNc5T3I February 23, 2025 at 10:28PM

Show HN: Easily make expandable / foldable diagrams https://ift.tt/ynV1QlU

Show HN: Easily make expandable / foldable diagrams https://ift.tt/UFNJzla February 23, 2025 at 01:53AM

Show HN: Willpayforthis.com – Ideas people will pay for https://ift.tt/8JjCoUn

Show HN: Willpayforthis.com – Ideas people will pay for Ah, there's a dumb easy hack to figure out what ideas people will pay for. Search "I'd pay for" on Twitter and you'll find hundreds of posts from people talking about pain points and products they'd pay for to solve them. Do this enough and you realize you have to filter through a lot of slop. slop. slop. I created willpayforthis.com to accumulate high signal, high quality posts and save you some time. I love thoughts from the community on how I can make it better, save you time, and help you work on the best ideas. https://ift.tt/2pVMQjf February 23, 2025 at 12:21AM

Show HN: Course on Building Full-Stack Chrome Extensions with React and Node.js https://ift.tt/16bBZTc

Show HN: Course on Building Full-Stack Chrome Extensions with React and Node.js I've been working in the extension space on a variety of products for a number of years now and decided to put together a course on how everything I wish I knew when I first started out. It goes through building an entire "product", meaning UI, API, and extension, all communicating with each other. It covers a lot of topics I get asked about often as well such as extension-level authentication, injecting React apps into web pages via content scripts, and a bunch more. https://ift.tt/cF4gKaZ February 22, 2025 at 11:28PM

Show HN: Slime OS – An open-source app launcher for RP2040 based devices https://ift.tt/xBnOvh1

Show HN: Slime OS – An open-source app launcher for RP2040 based devices https://ift.tt/v8BjywM February 22, 2025 at 01:52AM

Show HN: Rhiza – easily create shortcuts and add entries to PATH https://ift.tt/SQ8jlY3

Show HN: Rhiza – easily create shortcuts and add entries to PATH Rhiza is a Windows-only tool that makes any app easily launchable from both the command line and the Windows Start Menu. It works by creating shortcuts and adding entries to the PATH. Key Features: * Crawl ~ common directories to detect apps and games automatically * Add ~ any app by searching for it across the entire file system * Path ~ search for an executable and add its directory into PATH Rhiza simplifies app launching / calling tools by finding and managing them for you. https://ift.tt/nVc64fh February 22, 2025 at 01:03AM

Show HN: Tradofire, a fun way to learn crypto trading risk-free https://ift.tt/Ahr3Uyq

Show HN: Tradofire, a fun way to learn crypto trading risk-free Hey HN, I have been building this for the last couple years and probably spent way too much time. First I wanted to make an automated trading strategy based on crypto coins breaking support and resistance lines but after writing a whole system and backtesting infra I realized it doesnt work :( So here it is now as an app where you can learn to trade crypto based on these signals. Some key features are 1. Real-Time Market Analysis: See when coins break support/resistance levels or suddenly spike. 2. Paper Trading with Leverage: Test your trading strategies without risking real money. 3. Performance and Leaderboards: See your paper trading performance and compare with others. I dont know honestly if this will ever make any money but just sharing and hoping some folks like it. If you like it please tell me what else I can add. Cheers Sumeru PS: The app is iOS only for now (Android can come soon if there is demand) https://ift.tt/p5VCfB7 February 22, 2025 at 01:23AM

Show HN: DSBG – A Static Site Generator That Fast-Tracks Your Digital Presence https://ift.tt/uHkKCS0

Show HN: DSBG – A Static Site Generator That Fast-Tracks Your Digital Presence The ethos behind it is to automate your digital presence as much as possible, while retaining control over the created content. To that end, the following features are available: Easy installation; Support for Markdown & HTML source files; Automatic tag generation from paths ; built-in tag filtering; Client-side fuzzy search over all content; Automatic RSS feed generation; Watch mode with automatic rebuild for continuous feedback; 3 different themes, with the ability to add your own via custom CSS; Automatic share buttons for major social networks; Easy to extend with analytics, comments, and more. https://ift.tt/ASwZ6uR February 22, 2025 at 12:09AM

Show HN: I built an AI voice agent for Gmail https://ift.tt/7ydBC19

Show HN: I built an AI voice agent for Gmail Hello again, HN! I’ve been using my DSL to create new voice experiences. I’ve made an AI-powered email client for Gmail that you talk to, using your microphone. (I highly recommend using earbuds or headphones! Or the best is with Ray-Ban Meta glasses.) Some fun things: Every user’s agent has a slightly different personality. You can train it by asking it to remember things for next time. And it presents some generative UI while you use it. This is the first time I’m showing this publicly. I’d love your feedback! What works well, and what doesn’t? I previously did a Show HN for ‘D&D meets Siri’: https://ift.tt/0NJL9Ya . I’m thinking of releasing the framework/DSL that I’m using to craft these experiences. Would that be interesting? Would you want to build voice apps? https://pocket.computer February 21, 2025 at 02:34AM

Show HN: Agriquery – helping people sell their food https://ift.tt/qwcCdSg

Show HN: Agriquery – helping people sell their food We built Agriquery, a simple online marketplace designed to help farmers and small producers sell their produce directly to consumers (and businesses). Think Etsy, but for food. https://agriquery.com February 18, 2025 at 07:07PM

Show HN: Benchmarking VLMs vs. Traditional OCR https://ift.tt/ToiOMwn

Show HN: Benchmarking VLMs vs. Traditional OCR Vision models have been gaining popularity as a replacement for traditional OCR. Especially with Gemini 2.0 becoming cost competitive with the cloud platforms. We've been continuously evaluating different models since we released the Zerox package last year ( https://ift.tt/TAB2Ij9 ). And we wanted to put some numbers behind it. So we’re open sourcing our internal OCR benchmark + evaluation datasets. Full writeup + data explorer here: https://ift.tt/7KOZEy1 Github: https://ift.tt/PeplnfQ Huggingface: https://ift.tt/BjlnsZf Couple notes on the methodology: 1. We are using JSON accuracy as our primary metric. The end goal is to evaluate how well each OCR provider can prepare the data for LLM ingestion. 2. This methodology differs from a lot of OCR benchmarks, because it doesn't rely on text similarity. We believe text similarity measurements are heavily biased towards the exact layout of the ground truth text, and penalize correct OCR that has slight layout differences. 3. Every document goes Image => OCR => Predicted JSON. And we compare the predicted JSON against the annotated ground truth JSON. The VLMs are capable of Image => JSON directly, we are primarily trying to measure OCR accuracy here. Planning to release a separate report on direct JSON accuracy next week. This is a continuous work in progress! There are at least 10 additional providers we plan to add to the list. The next big roadmap items are: - Comparing OCR vs. direct extraction. Early results here show a slight accuracy improvement, but it’s highly variable on page length. - A multilingual comparison. Right now the evaluation data is english only. - A breakdown of the data by type (best model for handwriting, tables, charts, photos, etc.) https://ift.tt/7KOZEy1 February 21, 2025 at 12:19AM

Show HN: Make your logo liquid metal (open source) https://ift.tt/6eVL0Yd

Show HN: Make your logo liquid metal (open source) Good morning!! We thought the Apple liquid metal invite was so cool. How fun would it be if everyone could see their logo in liquid? So we made an app to let you make your logo in liquid. Just drag in your logo and see. To play with your logo: https://ift.tt/mV5XrLC Repo: https://ift.tt/yKl4hzN (We think you're gonna love it!) https://ift.tt/mV5XrLC February 20, 2025 at 01:41AM

Show HN: Tired of building agents? throw an LLM at this framework https://ift.tt/ZfJ7DQI

Show HN: Tired of building agents? throw an LLM at this framework https://ift.tt/dMwXkYQ February 20, 2025 at 05:25AM

Show HN: A new fork of OpenDeepResearcher with DeepSeek R1 https://ift.tt/0g15V3u

Show HN: A new fork of OpenDeepResearcher with DeepSeek R1 https://www.youtube.com/watch?v=aEOu9P4_2cU February 20, 2025 at 01:15AM

Show HN: Vakyume – a PDF2C++ engine that doesn't suck https://ift.tt/9fQzRJv

Show HN: Vakyume – a PDF2C++ engine that doesn't suck A geek's sucky Odyssey in AI's shadow through the realm of the metaprogramming hungry ghosts https://ift.tt/IDyjgRu February 19, 2025 at 10:53AM

Show HN: Subtrace – Wireshark for Docker Containers https://ift.tt/tiCh7eQ

Show HN: Subtrace – Wireshark for Docker Containers Hey HN, we built Subtrace ( https://subtrace.dev ) to let you see all incoming and outgoing requests in your backend server—like Wireshark, but for Docker containers. It comes with a Chrome DevTools-like interface. Check out this video: https://www.youtube.com/watch?v=OsGa6ZwVxdA , and see our docs for examples: https://ift.tt/AHa7UzR . Subtrace lets you see every request with full payload, headers, status code, and latency details. Tools like Sentry and OpenTelemetry often leave out these crucial details, making prod debugging slow and annoying. Most of the time, all I want to see are the headers and JSON payload of real backend requests, but it's impossible to do that in today's tools without excessive logging, which just makes everything slower and more annoying. Subtrace shows you every backend request flowing through your system. You can use simple filters to search for the requests you care about and inspect their details. Internally, Subtrace intercepts all network-related Linux syscalls using Seccomp BPF so that it can act as a proxy for all incoming and outgoing TCP connections. It then parses HTTP requests out of the proxied TCP stream and sends them to the browser over WebSocket. The Chrome DevTools Network tab is already ubiquitous for viewing HTTP requests in the frontend, so we repurposed it to work in the browser like any other app (we were surprised that it's just a bunch of TypeScript). Setup is just one command for any Linux program written in any language. You can use Subtrace by adding a `subtrace run` prefix to your backend server startup command. No signup required. Try for yourself: https://ift.tt/AHa7UzR https://ift.tt/AjFD5bH February 19, 2025 at 04:59AM

Show HN: Streamer Emails – Quickly Find and Filter Twitch Streamers Emails https://ift.tt/az0Ugxu

Show HN: Streamer Emails – Quickly Find and Filter Twitch Streamers Emails https://ift.tt/KPwdNQ7 February 19, 2025 at 03:33AM

Show HN: A GPU-accelerated binary vector index https://ift.tt/1eKhHJM

Show HN: A GPU-accelerated binary vector index This is a vector index I built that supports insertion and k-nearest neighbors (k-NN) querying, optimized for GPUs. It operates entirely in CUDA and can process queries on half a billion vectors in under 200 milliseconds. The codebase is structured as a standalone library with an HTTP API for remote access. It’s intended for high-performance search tasks—think similarity search, AI model retrieval, or reinforcement learning replay buffers. The codebase is located at https://ift.tt/OrD5IbR . https://ift.tt/s5bpAZV February 17, 2025 at 06:15AM

Show HN: AI Agents in Fraud Detection:Bridging the Gap Between ML and Reasoning https://ift.tt/XnUY43s

Show HN: AI Agents in Fraud Detection:Bridging the Gap Between ML and Reasoning https://ift.tt/Ob0aZ8y February 18, 2025 at 12:17AM

Show HN: Automate Expo QR Code Previews in GitHub PRs https://ift.tt/Ezs9TIu

Show HN: Automate Expo QR Code Previews in GitHub PRs Hey HN, Inspired by Vercel’s automated preview deployments, I built a GitHub Actions workflow that generates an Expo QR code per PR—so mobile previews are as easy as scanning a QR code. How it works: • Every PR triggers a GitHub Action • The action starts an Expo server • It posts a QR code in the PR comments for instant testing on mobile No more manually starting Expo. No more copying links. Just open a PR and scan the code. Full guide here: https://ift.tt/jF1ZlQM Would love to get feedback—how would you improve this workflow? https://ift.tt/jF1ZlQM February 17, 2025 at 10:03PM

Show HN: Kartoffels – Cellular Automata, Statistics, 32-bit RISC-V https://ift.tt/F8xmAfj

Show HN: Kartoffels – Cellular Automata, Statistics, 32-bit RISC-V https://ift.tt/WQcAnzj February 17, 2025 at 10:21PM

Show HN: B2B SaaS Go-to-Market Checklist https://ift.tt/juy8lBT

Show HN: B2B SaaS Go-to-Market Checklist https://ift.tt/2qY9vD4 February 17, 2025 at 04:10AM

Show HN: Air Traffic Control Radio and Chill Music for Focus https://ift.tt/HTD7Vh5

Show HN: Air Traffic Control Radio and Chill Music for Focus https://ift.tt/iLHgM49 February 17, 2025 at 03:06AM

Show HN: Hackyournews.com v2 https://ift.tt/oHhIwvF

Show HN: Hackyournews.com v2 A year and a half after I published https://ift.tt/7tSDiYc , I've rewritten it to be neater and added support for more news sources. HackYourNews.com v1 had a great response on HN [1] and consistently sees ~2k weekly unique visitors. There were many long-standing requests that I wanted to fulfill (thanks for your patience!): a proper dark mode, correct rendering on mobile devices, and more cogent summaries. This rewrite is the result. gpt-4o-mini reduces the cost of summarization to an absurd degree, so it's now sustainable to keep this free service going! Someday, I hope to use the Batch API [2] to drive down costs even further. Enjoy. [1] https://ift.tt/GmcSjfV [2] https://ift.tt/lJ6LGxj February 16, 2025 at 06:16AM

Show HN: I developed a no code web scraper for effortless data extraction https://ift.tt/KTJBC9p

Show HN: I developed a no code web scraper for effortless data extraction https://ift.tt/yiVBH7O February 16, 2025 at 11:34PM

Show HN: Tech Brief – AI enhanced news reading https://ift.tt/18LvTzf

Show HN: Tech Brief – AI enhanced news reading I built this because I wanted it, and I now use it every day. It's a simple news site that gathers and summarises tech content and discussions, across multiple sources, providing tight, easily digestable summaries along with some simple tooling to support reading workflows. 1) Hourly updated homepage with the latest tech news across the web. 2) A simple < 3 min "News of the Hour", every hour, audio clip. 3) Summaries of HackerNews and Product Hunt, incl. comments and sentiment (more to come). 3) GitHub login with AI summaries of any releases made to your starred repos. 4) Read/Unread article status. 5) Simple swipe interface and keyboard support. 6) Simple Bookmark/Readling List, and Favourite tags (logged in) No Tracking. Fast. Mobile Friendly. Easy sharing. https://tech.brief.page/ February 16, 2025 at 05:58AM

Show HN: Blunderchess.net – blunder for your opponent every five moves https://ift.tt/Xxkws2P

Show HN: Blunderchess.net – blunder for your opponent every five moves blunderchess.net is an open source, peer-to-peer chess app where every five moves, players each get to make one blunder-move for their opponent https://ift.tt/4KOJ8RF February 16, 2025 at 05:52AM

Show HN: Edit Any Record on ATProto with History https://ift.tt/vnGUBef

Show HN: Edit Any Record on ATProto with History https://ift.tt/oQNlePm February 16, 2025 at 02:24AM

Show HN: What If Rust, Actix, Diesel, Shuttle, Neon, NextJS, TypeScript https://ift.tt/mRVvlwU

Show HN: What If Rust, Actix, Diesel, Shuttle, Neon, NextJS, TypeScript https://www.youtube.com/watch?v=Mhz_eVH3XnQ February 15, 2025 at 02:16AM

Show HN: I got frustrated with CRMs, so I'm building my own for startups https://ift.tt/yhHEwCi

Show HN: I got frustrated with CRMs, so I'm building my own for startups After trying a bunch of CRMs for my startup, I kept running into the same issues—overpriced plans that scale aggressively or bloated features that just slow me down. I wanted something simple, affordable, and actually built for startups, so I decided to build it myself: Leadchee.com. Fixed pricing, no nonsense. Curious—how do you all handle CRMs? Do you stick with the big players, go for niche tools, or build your own? Would love to hear your thoughts! https://leadchee.com February 14, 2025 at 09:25PM

Show HN: Open-Sourcing My LLM Drag and Drop Website Builder https://ift.tt/Q0StYNc

Show HN: Open-Sourcing My LLM Drag and Drop Website Builder Hey HN - OP here. I wrote some about this project in the following link, and there's a video demo as well: https://ift.tt/456gJcz... This has been one of my favorite things I've ever worked on - the way the LLM collaborates with the user to accelerate tedious and hard work, the way you can directly edit the code instead of dealing with a panel of visual editing toggles - I think it has a lot of potential but I don't have time to pursue it anymore so open-sourcing it. The idea for this came out of conversations with a few people who were struggling with frontend development. For technical people, strictly using an LLM to write code can be tedious. To combat this, LLM usage is limited to getting started quickly, improving design, and wiring up frontend state. On the other hand, writing frontend code feels less efficient than just moving things around on a screen. Hence the drag and drop interface that makes it fast to build. Finally, I despise the visual editing toggles on Figma / Bubble / Squarespace / etc. The amount of hunt and peck to simply adjust a font a bit and change some colors or add a shadow is a huge time suck. So I built a way to directly edit the underlying React code when styling - just add or remove tailwind classes. IMO the craziest thing is that all of the code is just stored on the frontend in a config language of sorts. It is inflated at runtime and can be updated without any hot reload. There is no "underlying React code" for the app you're building here - in order to edit the code, I convert the config into React code, then convert back to a config, which triggers updates in the dom. Anyways, I think there's a lot of clever stuff in here, but then again I wrote it. Happy to answer any questions and hope this is interesting/helpful to someone else out there. https://ift.tt/XcqeQit February 14, 2025 at 11:38PM

Show HN: HackerVoice – An Experimental AI Podcast Covering Hacker News https://ift.tt/8eQuncj

Show HN: HackerVoice – An Experimental AI Podcast Covering Hacker News Hey HN: What it does: HackerVoice automatically generates a daily podcast summarizing the top five trending Hacker News topics using AI. How it works: Uses a combination of Gemini and GPT-4o to analyze and summarize trending topics. Leverages OpenAI’s text-to-speech (TTS) engine to generate natural-sounding narration. Runs on an automated schedule (cron job at 16:00 UTC daily). Episodes are available for listening at: https://ift.tt/BrLloha . https://ift.tt/BrLloha February 14, 2025 at 06:05AM

Show HN: SQL Noir – Learn SQL by solving crimes https://ift.tt/zp03e4v

Show HN: SQL Noir – Learn SQL by solving crimes I built SQL Noir, an interactive detective game that challenges you to solve mysteries using real SQL queries. It’s fully open source, designed to give you a practical and immersive way to learn SQL while engaging with a narrative-driven mystery. https://www.sqlnoir.com February 14, 2025 at 03:19AM

Show HN: Dev SSO IdP, a mock single sign-on provider as a development aide https://ift.tt/PzAKiyD

Show HN: Dev SSO IdP, a mock single sign-on provider as a development aide Hi HN! This project grew out of my want for the development of my web UIs to not get hung up on integration with OpenID Connect single sign-on. SSO was only available in our stage and prod environments. Getting this integration laid down and tested fast, without having to jury-rig something in stage, would've been huge. And so I decided to build a solution myself. Hence, Dev SSO IdP. The vision for it is to mock all the features of an OIDC SSO server that would be pertinent to the development of web apps. To try it out: 1) Create a file called `.production.env` and paste in it the following 2 lines to start with: DEVSSOIDP_PERCENT_ENCODED_REDIRECT_URIS=http%3A%2F%2Flocalhost%3A5173 DEVSSOIDP_CLIENT_IDS=my_cool_app 2a) (with Node) Clone the repo with `git clone https://ift.tt/Qj4LtU9 `, then overwrite the project's `.production.env` with yours, then in the project's folder run `npm install`, then `npm start` 2b) (with Docker) Run `docker run -p 3000:3000 --rm --env-file .production.env bmcase/devssoidp:1.0.0` You can then see it at (and have your app redirect to) http://localhost:3000/authorize?response_type=code&client_id... You can add or change environment variables in `.production.env` in the likely case that its defaults don't apply to you. The GitHub readme goes into more detail on all of this. They say "be flexible in what you accept and strict in what you output". But Dev SSO IdP is intentionally strict in what it accepts so that I could catch issues faster. It raises an alarm in dev so you don't later get one in prod. This version I am comfortable designating v1.0.0. It has all the features needed for the OIDC code flow. I'd appreciate any advice, and in particular am interested in: * Would this actually be useful in your projects? Is there anything else it would need? * Do you use the OIDC implicit flow? I've never had reason to, and I understand it's regarded as a bad practice. But I worry I may be in a bubble and so I want to know if there's in fact a lot of folks out there who use the implicit flow. Aside, I'm open to work, and would be interested in bringing my full stack skills to your team (or the team of someone you want to do a favor for), in the Austin TX area or remotely. I'm happy to hear from you by email (ben@benswords.com) or LinkedIn ( https://ift.tt/EKjq7lY ). https://ift.tt/tX8TGSM February 14, 2025 at 01:53AM

Show HN: A no-build fullstack SSR TypeScript web framework https://ift.tt/zLumJBA

Show HN: A no-build fullstack SSR TypeScript web framework Hi HN family! I'd love to seek your insights on a fullstack web framework that employs a different approach: no build. It's not a new concept. The folks as Preact mentioned it: https://ift.tt/aztdijP However, in the Web Framework market, I've yet to find many that support both "no build" and "SSR". There's always some sorts of "client mount" and "server mount" and either has (or both have) to go through a build (bundling) process. With the build process, there comes additional maintenance efforts and cognitive load. I've enjoyed wrestling with tsconfig, webpack config, all sorts of presets and plugins countless times... When things work, they just work, but when we need sth a bit custom or unconventional, then we're almost always in for a tough ride. (or it's just me ) Not to say I'm against any existing build workflow. In fact I benefited a lot in the past from webpack, and i'm very positive about modern bundlers like Parcel 2, Turbopack, rspack, etc. I just feel it'd be fair to save some slots for the "no build" route :) To this end, I spent the last month working on a prototype of a TypeScript fullstack SSR web framework. It's compatible with Deno and Bun runtimes. I'd love to make it compatible with Node.js as well (at some point). The framework registry page ( https://ift.tt/ge0xmyp ) summarizes the motives expressed so far. An example deployment is available at: https://ift.tt/Kwh9dVN The code behind the deployment above: https://ift.tt/c903OtX PS: you may see Preact being used & mentioned everywhere but I'm positive that React is 100% supported as well (just drop-in & use). I just happened to choose Preact to experience it more for myself. I look forward to your thoughts :) and learning if this might (or might not) be a feasible idea at scale. And perhaps, which future directions you would see this (or something like it) goes. Thank you much for any insight! https://ift.tt/ge0xmyp February 13, 2025 at 01:24AM

Show HN: Mkinf – an open-source library of hosted AI agents and tools https://ift.tt/8XFlH1B

Show HN: Mkinf – an open-source library of hosted AI agents and tools We are building an open-source library of hosted AI agents and tools that developers can integrate into their graph frameworks with a simple SDK or API call, speeding up development and deployment times. They can use them as-is, customize them for their specific use cases, and even contribute their own agents — unlocking monetization opportunities. https://hub.mkinf.io February 12, 2025 at 11:06PM

Show HN: Sort lines semantically using llm-sort https://ift.tt/ptXi0Fm

Show HN: Sort lines semantically using llm-sort This is a small plugin I made for Simon Willison's llm utility. You can do things like: cat names.txt | llm sort -q "Which one of these names is best for a pet seagull?" cat books.txt | llm sort -q "Which book is more related to basic vs. advanced CS topics?" I see a lot of potential marrying LLMs with classic UNIX interfaces. https://ift.tt/cmjHiLu February 11, 2025 at 08:55AM

Show HN: A lightweight and flexible open source bastion https://ift.tt/5cIt0S8

Show HN: A lightweight and flexible open source bastion OneTerm is a simple, lightweight and flexible enterprise-class bastion host, designed and developed based on 4A compliant, i.e. Authen, Authorize, Account, and Audit, which ensures the security and compliance of the system through strict access control and monitoring features. https://ift.tt/OCiIuRF February 12, 2025 at 07:38AM

Show HN: HypeBridge – Your Dedicated AI-Agent Driven Influencer Marketing Agency https://ift.tt/XK5EGf9

Show HN: HypeBridge – Your Dedicated AI-Agent Driven Influencer Marketing Agency https://ift.tt/jBSoGPz February 12, 2025 at 02:32AM

Show HN: I open-sourced machine translation models for 12 rare languages https://ift.tt/lGsjh3K

Show HN: I open-sourced machine translation models for 12 rare languages You can test translation quality here https://ift.tt/beBsnTO https://ift.tt/7qaxcjo February 12, 2025 at 02:37AM

Show HN: Community Detection on Bluesky https://ift.tt/xj9Ion8

Show HN: Community Detection on Bluesky We ran the Leuven community detection algorithm on popular users on Bluesky (where the graph has edges determined by Jaccard similarity of a users' followers). We identified 118 communities and based on the names and descriptions of the top 10-20 users had LLMs generate title and descriptions for them. There are communities like "Feline enthusiasts", "Web Professionals", a bunch of NSFW ones and quite many communities are many different flavors of progressive/liberal activists. https://ift.tt/RZ6nf4B February 12, 2025 at 02:09AM

Show HN: I built a tool to auto-tailor resumes to job posts https://ift.tt/jGops8J

Show HN: I built a tool to auto-tailor resumes to job posts Hi HN, I got frustrated with the time-consuming process of tailoring resumes and cover letters for job applications. Even using ChatGPT, it was taking me about 10 minutes per application just to prompt and copy-paste everything into Word. I found myself only customizing applications for roles I was really excited about, which wasn't ideal. So I worked really hard and built useResume to solve two problems: helping me stand out with every application, and eliminating the Word document workflow. I've been using it myself for all my latest applications and I hope it can help you too. I'd love to hear your feedback. Vlad https://useresume.ai February 11, 2025 at 01:28AM

Show HN: WhisperCat – An Audio Recorder and Transcription Tool https://ift.tt/NhcLQKV

Show HN: WhisperCat – An Audio Recorder and Transcription Tool Hi HN, I wanted to share my first open-source project with you all: WhisperCat . WhisperCat is a small desktop application for recording audio and transcribing it using OpenAI's Whisper API. I built this because I needed something simple and reliable for my own transcription workflows, and now I'm hoping it might be useful to others as well. It's still pretty early stage, but it works well for basic audio recording and transcription tasks. What It Does: Lets you record audio with your preferred microphone. Transcribes audio files automatically via Whisper (OpenAI's transcription API). Supports global hotkeys for recording (e.g., CTRL + R or a custom sequence like triple ALT). Runs in the background (system tray) when minimized. Has a basic microphone testing feature to help you pick the right device. Shows desktop notifications for events (e.g., when recording starts or errors happen). Platforms: WhisperCat is available for Windows and Linux , and there’s also an experimental macOS build you can try if you’re feeling adventurous: Experimental macOS Build You can download the latest release here: https://ift.tt/CObR3lE Feedback is welcome! https://ift.tt/Ih7VgDv February 11, 2025 at 01:11AM