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

Show HN: Arelo – A simple, flexible file watcher for auto-restarting commands https://ift.tt/57nYg9B

Show HN: Arelo – A simple, flexible file watcher for auto-restarting commands arelo is a lightweight, language-agnostic file watcher that automatically runs a command when files change. It requires no configuration files; everything is controlled via simple command-line options. Easy to use: arelo -p '**/*.go' -- go run . Flexible file watching: Supports fsnotify (real-time), polling (for environments like WSL2), and fine-grained control with extended globbing (** and {js,ts,json}). Cross-platform and lightweight: Runs on Windows, macOS, and Linux without extra dependencies. Installation: - go install github.com/makiuchi-d/arelo@latest - Or download a prebuilt binary from GitHub Releases: https://ift.tt/14WjmdA https://ift.tt/aZSpoRM February 10, 2025 at 09:49PM

Show HN: Locksmith – detect locks taken by Postgres migrations https://ift.tt/abdx7D6

Show HN: Locksmith – detect locks taken by Postgres migrations https://ift.tt/0cBueJt February 10, 2025 at 02:26AM

Show HN: Curatrs – Scheduled Programming for Podcasts https://ift.tt/4UHsidt

Show HN: Curatrs – Scheduled Programming for Podcasts Like many of us, I got tired of scrolling endlessly through podcast apps trying to find the right show for my commute. So I built Curatrs (curatrs.com) - it brings radio-style scheduled programming to podcast discovery. Instead of endless scrolling, you get podcasts programmed for specific times and durations. Currently in early MVP, built with Vite/Supabase, focused on making discovery more intentional and time-based. Would appreciate any feedback, especially from regular podcast listeners https://ift.tt/CmJGzHv February 10, 2025 at 01:23AM

Show HN: I made a Kotlin REPL with multiline editor, highlighting and completion https://ift.tt/D6VhP21

Show HN: I made a Kotlin REPL with multiline editor, highlighting and completion I’ve created a Kotlin REPL for the terminal with support for multiline code editing, interconnected cells, code completion, and error highlighting. https://ift.tt/xtufO3c February 9, 2025 at 11:33PM

Show HN: Neovim Plugin for iOS and macOS Development https://ift.tt/WFxjcSi

Show HN: Neovim Plugin for iOS and macOS Development Over two years ago, I began exploring whether it was possible to shift my iOS development to Neovim. It took me over six months to resolve all issues and figure out how to connect everything, creating an environment with all the features required for development. After that, I decided to develop my own plugin to enable others to do the same. Since then, I have been developing apps for iOS and macOS using Neovim, for both my professional work and personal projects with no issues. This change has significantly boosted my productivity, and I no longer have to deal with Xcode's flaws. I can accomplish 95% of my work without needing to open Xcode. Before that, it seemed impossible to develop for Apple platforms outside of Xcode. I'm proud that I was stubborn enough to make it work after all those failures along the way. Neovim is an amazing project <3. https://github.com/wojciech-kulik/xcodebuild.nvim February 9, 2025 at 06:16PM

Show HN: Hyloblog – minimal, Git-based SSG for writing (not theming) https://ift.tt/y4T7tOn

Show HN: Hyloblog – minimal, Git-based SSG for writing (not theming) Hi HN, We're working on Xr0 [0] and have been building a static-site generator that meets our tastes and needs. The basic emphasis is on simplicity and content rather than customisability and feature-richness. We are imitating Jekyll and Hugo (and other SSGs) in their basic generation paradigm and LaTeX in its separating form from content, but attempting to combine these into a unified, minimal philosophy where you can open a repo and start writing without needing a CLI tool to generate your folder for you. The project is broken into two applications: an SSG you can run locally (or in a GH Action etc.) and a platform for easy hosting that bundles in some basic audience interaction features. Both are available on GitHub: [1] and [2]. We've been working on this somewhat sporadically for the past couple of months, and it is very much a WIP, particularly in the themes it offers, but we're keen to hear thoughts on this. [0]: https://xr0.dev [1]: https://ift.tt/JXVcxNd [2]: https://ift.tt/rVjSaJz https://hyloblog.com/ February 9, 2025 at 02:53AM

Show HN: Lambda Core – Minimal Lambda Calculus in Every Language https://ift.tt/Ps9D0Mm

Show HN: Lambda Core – Minimal Lambda Calculus in Every Language Lambda Core is a collaborative project to implement the basics of lambda calculus (just booleans and church numerals) in every programming language! We now have 18 languages implemented. If your favorite language isn’t already in the repo, please add it! The instructions are simple, and it's a fun way to explore how different languages handle higher-order functions. Check out the GitHub link for details. I'd love your feedback and hope you'll join in! https://ift.tt/kOWjCV7 February 9, 2025 at 02:23AM

Show HN: I trained a custom LLM to create Apple Shortcuts https://ift.tt/8KeZyTj

Show HN: I trained a custom LLM to create Apple Shortcuts Hi! This is a version 2.0 2x Context window 7-8x Faster Less hallucinations :) https://ift.tt/DlfTCcP February 8, 2025 at 11:05PM

Show HN: HN as TikTok, Welcome to HN Hell https://ift.tt/oWKmv2b

Show HN: HN as TikTok, Welcome to HN Hell https://hnhell.com February 5, 2025 at 04:45PM

Show HN: Open-source Hacker News apps https://ift.tt/lejHqOp

Show HN: Open-source Hacker News apps We at Emerge Tools (YC W21) recently released open source Hacker News apps for both iOS and Android. The apps use the latest SwiftUI and Compose frameworks and are entirely native. Our goal is to help dogfood our products, but more importantly our team just enjoys reading HN every day and wanted an app to hack on and call our own. :) We are still missing some features but should otherwise be pretty solid. And open to any contributions. iOS: https://ift.tt/wB4hXj1... Android: https://ift.tt/8DiSgue... https://ift.tt/QZfbsDT February 8, 2025 at 02:11AM

Show HN: A website that heatmaps your city based on your housing preferences https://ift.tt/X0lm7ct

Show HN: A website that heatmaps your city based on your housing preferences For the past few months, I've been working on a website that answers two different questions: - Where in my city have the best travel times to all the things and people I care about? - Given a listing, how far is it from all the things and people I care about? Personally this was fueled by my own frustrations when I was apartment hunting in NYC. I was frustrating to have to juggle so many Google Maps tabs when I was evaluating a listing, and it was also annoying to not have full confidence that I was even searching in the right places. I wanted to be close to work, a Trader Joe's, and a major park. Given that public transportation networks can sometimes make close things hard to get to and far things easy to get to, it's not always obvious whether a neighborhood actually even fits my criteria or not! The overarching goal of theretowhere.com is to allow you to make more informed moving decisions while also making things more convenient than they are today. https://ibb.co/pBsX2HjN It can generate detailed travel time breakdowns for individual listings and addresses, making it easier to determine whether a listing is worth applying for without juggling Google Maps tabs. This is great for questions like “How far is this apartment from my friends, work and dancing gyms?” https://ibb.co/mVBjwPrJ It also has the powerful ability to heatmap a city based on which parts of it are close or not to the people and places you care about. This is great for questions like “Where in the city would I be reasonably close to work, friends and a woodworking studio?” https://ibb.co/vCynPSRK You can add these heatmaps to sites like Zillow and Streeteasy to make things super convenient (this was very fun to make). The main thing that's on my mind is whether this is useful or not. Like, is this something you would actually use? I also have other ideas I'd like to eventually intergrate into this (crime heatmaps, noise heatmaps, etc) https://ift.tt/bWTHtSm February 7, 2025 at 11:53PM

Show HN: Heap Explorer https://ift.tt/onHdRvb

Show HN: Heap Explorer I wrote a little LD_PRELOAD library that makes it easy to inspect and interact with a running program's glibc heap. It's fun to pause processes, free a bunch of their allocations, then resume them. Most of the time, the processes continue as though nothing happened, but sometimes they do interesting things :) https://ift.tt/ONbiRmj February 6, 2025 at 10:24AM

Show HN: Embedding WebAssembly in QR Codes https://ift.tt/FpwEo7J

Show HN: Embedding WebAssembly in QR Codes https://ift.tt/hrDiTZQ February 6, 2025 at 08:13PM

Show HN: Kindly RSS, a self-hostable RSS app designed for e-ink devices https://ift.tt/FU8Cyb0

Show HN: Kindly RSS, a self-hostable RSS app designed for e-ink devices In the last few weeks I've been working on a RSS application designed to be used in e-ink devices such as Kindle, through the device's web browser. It's a self-hostable app optimized for running on low-end hardware (such as Raspberry Pi, I actually run it on a 3b model). The project is in its early stages of development. It is usable, but you may (and probably will :P) encounter bugs from time to time. I did it for myself (I like to read at night before going to sleep but I don't like to use my phone at that time). I thought people could find it useful so I worked on it a little bit more to publish it. At the moment it can only be run by downloading and compiling the source code or using the docker image (in the repo and the landing page there is a curl that executes the script to run the container, manual instructions can be found in the repo's README). Repo: https://ift.tt/YhOW9yb Dockerhub: https://ift.tt/i5W8Ar0 Thank you for reading! I'd love to hear your thoughts and suggestions. https://kindlyrss.app/ February 6, 2025 at 02:16AM

Show HN: How good is your color vision? Find out in my new game https://ift.tt/prPjNdz

Show HN: How good is your color vision? Find out in my new game https://ift.tt/eOEd7Vm February 2, 2025 at 05:33AM

Show HN: Grammarly-like extension for any language https://ift.tt/UmRZFA1

Show HN: Grammarly-like extension for any language https://ift.tt/cgj6i31 February 6, 2025 at 12:11AM

Show HN: CoPlay – Enabling In-Room Xbox Gaming for Children's Hospitals https://ift.tt/aL30piP

Show HN: CoPlay – Enabling In-Room Xbox Gaming for Children's Hospitals Hey everybody, My name is Brady. I'm the creator of CoPlay. Think of it as an MDM/fleet management for xbox accounts and devices. Pediatric hospitals want to allow their patients to play and connect with friends, family and other patients but they have lacked the tools to facilitate and manage this in the past. A friend and I found this problem while volunteering at our local children's hospital. We are now in 6 pediatric hospitals across the US. Yup, it's a niche. But it's a cool niche. I'm sharing this to get feedback, answer questions, contribute to this amazing community and most importantly, HOPEFULLY FIND SOMEONE THAT CAN GET US CONNECTED TO SOME OF THE HIGHER UPS AT MICROSOFT/XBOX. If you have any connections at all please reach out. We believe there is an opportunity for a beautiful partnership there. Sorry for shouting ;) https://ift.tt/jf8RxZO February 5, 2025 at 02:08AM

Show HN: Haystack Code Reviewer – Perform code reviews on a canvas https://ift.tt/49X38Ig

Show HN: Haystack Code Reviewer – Perform code reviews on a canvas Hi HN! We’re building Haystack Code Reviewer, a tool that lays out code diffs for a GitHub pull request on an interactive canvas. Instead of scrolling through diffs line-by-line, you can view all changes in a more connected, visual format – similar to viewing a call graph. We hope this will make it easier and less cognitively taxing to understand how different changes across files work together. For a quick overview, check out our short demo video: https://www.youtube.com/watch?v=QeOz70x0WPE . If you would like to give it a spin, head over to https://ift.tt/F4NPLfw , click the “Review pull request button” in the top toolbar, and load any pull request via URL or pick a pull request from a dropdown. We built Haystack Code Reviewer because we found pull requests difficult to review in a pure textual format — especially when hopping between multiple files or trying to break down complex changes. Oftentimes, pull request authors would have to specifically structure their commits so that code reviews would be easier to tackle, which is a time-consuming and error-prone process. Our goal is to make any pull request easy to understand at a glance, and reduce the effort needed from both reviewers and authors to craft a good code review. Haystack Code Reviewer works on private repositories! We have authentication to ensure that someone cannot open the server for your pull request without having access to that pull request on GitHub. For additional security, we plan to build self-hosting soon. Please contact us if you’re interested in this. Alternatively, a completely local option would be to download desktop Haystack and then navigate to your pull request from there. This is great for trying out the feature without exposing any data on the cloud! In the near future, we plan to: 1. Introduce step-by-step navigation to guide reviewers through each part of the changeset 2. Allow for self-hosting We’d love to hear your thoughts, suggestions, and any feedback on our approach or potential features! https://ift.tt/v2KQUjC February 4, 2025 at 10:32PM

Show HN: Mandarin Word Segmenter with Translation https://ift.tt/0QwZ9st

Show HN: Mandarin Word Segmenter with Translation I've built mandoBot, a web app that segments and translates Mandarin Chinese text. This is a Django API (using Django-Ninja and PostgreSQL) and a NextJS front-end (with Typescript and Chakra). For a sample of what this app does, head to https://ift.tt/tQIe1nu . This is my presentation of the first chapter of a classic story from the Republican era of Chinese fiction, Diary of a Madman by Lu Xun. Other chapters are located in the "Reading Room" section of the app. This app exists because reading Mandarin is very hard for learners (like me), since Mandarin text does not separate words using spaces in the same way Western languages do. But extensive reading is the most effective way to learn vocabulary and grammar. Thus, learning Mandarin by reading requires first memorizing hundreds or thousands of words, before you can even know where one word ends and the next word begins. I'm solving this problem by allowing users to input Mandarin text, which is then computationally segmented and machine translated by my server, which also adds dictionary definitions for each word and character. The hard part is the segmentation: it turns out that "Chinese Word Segmentation"[0] is the central problem in Chinese Natural Language Processing; no current solutions reach 100% accuracy, whether they're from Stanford[1], Academia Sinica[2], or Tsing Hua University[3]. This includes every LLM currently available. I could talk about this for hours, but the bottom line is that this app is a way to develop my full-stack skills; the backend should be fast, accurate, secure, well-tested, and well-documented, and the front-end should be pretty, secure, well-tested, responsive, and accessible. I am the sole developer, and I'm open to any comments and suggestions: roberto.loja+hn@gmail.com Thanks HN! [0] https://ift.tt/p9TDIcx [1] https://ift.tt/cIJGq1p [2] https://ift.tt/AnZpR38 [3] https://ift.tt/KQvs2tV https://ift.tt/U4Fck8o February 4, 2025 at 11:26PM

Show HN: I indexed 10M Shopify products to build an API https://ift.tt/LojhZ8V

Show HN: I indexed 10M Shopify products to build an API https://ift.tt/wK8ao79 February 4, 2025 at 02:35AM

Show HN: Calculate Your Revenue https://ift.tt/gaqR01m

Show HN: Calculate Your Revenue https://ift.tt/MbXapd4 February 3, 2025 at 04:17PM

Show HN: Surf.new – An open-source alternative to OpenAI Operator https://ift.tt/DAulHbX

Show HN: Surf.new – An open-source alternative to OpenAI Operator https://ift.tt/N06fhj2 February 4, 2025 at 12:51AM

Show HN: AI text editor with suggested edits in diff view https://ift.tt/XwfHjnK

Show HN: AI text editor with suggested edits in diff view https://www.potext.com February 3, 2025 at 11:41PM

Show HN: Made a tiling manager Linux-XFCE to roughly copy Snap-Layout in Windows https://ift.tt/yYqS10z

Show HN: Made a tiling manager Linux-XFCE to roughly copy Snap-Layout in Windows Title says all that needs to said about it, admittedly it is stupid to "copy" any Windows feature in Linux but here we are...it is not exactly made for use by extensive audience but just a rough work of it would love any suggestion/critique on it ... https://ift.tt/iOJPUum February 3, 2025 at 10:13AM

Show HN: I Built a Platform to Buy and Sell GitHub Repositories https://ift.tt/z5rDI2Q

Show HN: I Built a Platform to Buy and Sell GitHub Repositories Hey HN, I built a platform that allows developers to buy and sell GitHub repositories using private forking. The idea is to help indie developers, open-source maintainers, and teams monetize their work while ensuring buyers get fully functional projects with minimal hassle. Many developers create great projects but lack the time or resources to maintain them. Instead of letting them fade away, why not sell them to someone who wants to continue the work? Here is how it works: - Sellers list theis GitHub repos in the platform - Buyers purchase repos - Buyers automatically added as collaborators and can fork the repo Check it out here: https://gittrader.com https://ift.tt/gbzl4wx February 3, 2025 at 06:07AM

Show HN: Random Art Generator in Haskell https://ift.tt/0kCLNmt

Show HN: Random Art Generator in Haskell https://ift.tt/ZOuDVEQ February 3, 2025 at 02:11AM

Show HN: Modest – musical harmony library for Lua https://ift.tt/scaBPgh

Show HN: Modest – musical harmony library for Lua This is a project I've been building in my spare time over the past few months. It's a library that provides methods for working with musical harmony ‒ intervals, notes, chords. For example, it can parse almost any chord symbol (Fmaj7, CminMaj9, etc) and turn it into notes, or it can identify a chord from a given set of notes. I started this project with the idea of using formal grammar to parse chord symbols. I wanted to use it instead of a hand-written parser, which is the common approach among similar libraries. Lua caught my attention because of Lpeg, a Parsing Expression Grammar library that is both fast and easy to use. An additional motivation for using Lua was the lack of comparable libraries for it, even though the language is commonly used in audio programming. However, despite being a Lua library, the project itself is written in Fennel — a "lispy" language that transpiles to Lua. Fennel has features that make writing code for the Lua platform much more pleasant: a concise syntax, macros, and destructuring — a feature Lua sorely lacks! In the process, I definitely learned a lot about music theory, although my new knowledge is quite one-sided. By working on this library, I know a thing or two about types and structure of chords, but I learned almost nothing about their composition and transformation. Perhaps these will be the directions I explore next in the project. https://ift.tt/isQJfCS February 2, 2025 at 04:02PM

Show HN: I built a full mulimodal LLM by merging multiple models into one https://ift.tt/OuFZHbo

Show HN: I built a full mulimodal LLM by merging multiple models into one https://ift.tt/EsW63ye February 2, 2025 at 12:44PM

Show HN: ESP32 RC Cars https://ift.tt/S1b0rVg

Show HN: ESP32 RC Cars This is a projected I started that blends both the fun of playing a split screen multiplayer driving game and controlling real rc cars. The cars can also be controlled via bluetooth gamepads and is meant to be easily hackable. https://ift.tt/tB4IXQP February 2, 2025 at 12:21AM

Show HN: I hacked LLMs to work like scikit-learn https://ift.tt/hHoWVYm

Show HN: I hacked LLMs to work like scikit-learn Working with LLMs in existing pipelines can often be bloated, complex, and slow. That's why I created FlashLearn , a streamlined library that mirrors the user experience of scikit-learn. It follows a pipeline-like structure allowing you to "fit" (learn) skills from sample data or instructions, and "predict" (apply) these skills to new data, returning structured results. High-Level Concept Flow: Your Data --> Load Skill / Learn Skill --> Create Tasks --> Run Tasks --> Structured Results --> Downstream Steps Installation: pip install flashlearn Learning a New "Skill" from Sample Data Just like a fit/predict pattern in scikit-learn, you can quickly "learn" a custom skill from minimal (or no!) data. Here's an example where we create a skill to evaluate the likelihood of purchasing a product based on user comments: from flashlearn.skills.learn_skill import LearnSkill from flashlearn.client import OpenAI # Instantiate your pipeline "estimator" or "transformer", similar to a scikit-learn model learner = LearnSkill(model_name="gpt-4o-mini", client=OpenAI()) data = [ {"comment_text": "I love this product, it's everything I wanted!"}, {"comment_text": "Not impressed... wouldn't consider buying this."}, # ... ] # Provide instructions and sample data for the new skill skill = learner.learn_skill( data, task=( "Evaluate how likely the user is to buy my product based on the sentiment in their comment, " "return an integer 1-100 on key 'likely_to_buy', " "and a short explanation on key 'reason'." ), ) # Save skill to use in pipelines skill.save("evaluate_buy_comments_skill.json") Input Is a List of Dictionaries Simply wrap each record into a dictionary, much like feature dictionaries in typical ML workflows: user_inputs = [ {"comment_text": "I love this product, it's everything I wanted!"}, {"comment_text": "Not impressed... wouldn't consider buying this."}, # ... ] Run in 3 Lines of Code - Concurrency Built-in up to 1000 calls/min # Suppose we previously saved a learned skill to "evaluate_buy_comments_skill.json". skill = GeneralSkill.load_skill("evaluate_buy_comments_skill.json") tasks = skill.create_tasks(user_inputs) results = skill.run_tasks_in_parallel(tasks) print(results) Get Structured Results Here's an example of structured outputs mapped to indexes of your original list: { "0": { "likely_to_buy": 90, "reason": "Comment shows strong enthusiasm and positive sentiment." }, "1": { "likely_to_buy": 25, "reason": "Expressed disappointment and reluctance to purchase." } } Pass on to the Next Steps You can use each record’s output for downstream tasks such as storing results in a database or filtering high-likelihood leads: # Suppose 'flash_results' is the dictionary with structured LLM outputs for idx, result in flash_results.items(): desired_score = result["likely_to_buy"] reason_text = result["reason"] # Now do something with the score and reason, e.g., store in DB or pass to next step print(f"Comment #{idx} => Score: {desired_score}, Reason: {reason_text}") https://ift.tt/YT4tzQx February 1, 2025 at 10:09PM