Show HN: Winslop – De-Slop Windows https://ift.tt/JPTBtHV

Show HN: Winslop – De-Slop Windows https://ift.tt/GSQryTJ February 22, 2026 at 01:26AM

Show HN: HelixDB Explorer – A macOS GUI for HelixDB https://ift.tt/RQAkhiI

Show HN: HelixDB Explorer – A macOS GUI for HelixDB https://ift.tt/ySEvPGW February 20, 2026 at 11:18PM

Show HN: A small, simple music theory library in C99 https://ift.tt/8Xb75DL

Show HN: A small, simple music theory library in C99 https://ift.tt/NpKdaE5 February 20, 2026 at 04:24AM

Show HN: Hi.new – DMs for agents (open-source) https://ift.tt/GJpWvuR

Show HN: Hi.new – DMs for agents (open-source) https://www.hi.new/ February 20, 2026 at 02:50AM

Show HN: Astroworld – A universal N-body gravity engine in Python https://ift.tt/FctZTqp

Show HN: Astroworld – A universal N-body gravity engine in Python I’ve been working on a modular N-body simulator in Python called Astroworld. It started as a Solar System visualizer, but I recently refactored it into a general-purpose engine that decouples physical laws from planetary data.Technical Highlights:Symplectic Integration: Uses a Velocity Verlet integrator to maintain long-term energy conservation ($\Delta E/E \approx 10^{-8}$ in stable systems).Agnostic Architecture: It can ingest any system via orbital elements (Keplerian) or state vectors. I've used it to validate the stability of ultra-compact systems like TRAPPIST-1 and long-period perturbations like the Planet 9 hypothesis.Validation: Includes 90+ physical tests, including Mercury’s relativistic precession using Schwarzschild metric corrections.The Planet 9 Experiment:I ran a 10k-year simulation to track the differential signal in the argument of perihelion ($\omega$) for TNOs like Sedna. The result ($\approx 0.002^{\circ}$) was a great sanity check for the engine’s precision, as this effect is secular and requires millions of years to fully manifest.The Stack:NumPy for vectorization, Matplotlib for 2D analysis, and Plotly for interactive 3D trajectories.I'm currently working on a real-time 3D rendering layer. I’d love to get feedback on the integrator’s stability for high-eccentricity orbits or suggestions on implementing more complex gravitational potentials. https://ift.tt/Ee0cjKS February 20, 2026 at 01:27AM

Show HN: Wakapadi – Meet locals and travelers nearby and join free walking tours https://ift.tt/BnUX1pl

Show HN: Wakapadi – Meet locals and travelers nearby and join free walking tours Hi HN, I built Wakapadi after noticing that most travel tools focus on planning trips, but not on actually helping people connect once they arrive somewhere new. When traveling, it’s often hard to meet locals or other travelers unless you already know someone, join organized tours, or rely on chance. I wanted to make discovery more natural — seeing who’s nearby, joining free walking tours, and exploring cities together. Wakapadi currently allows users to: discover free walking tours see nearby travelers and locals who are open to meeting connect and chat before meeting explore cities in a more social way The project is still early, and I’m especially interested in feedback on: safety and privacy expectations what would make you comfortable meeting people while traveling features that would make this genuinely useful instead of another travel app Happy to answer any technical or product questions. https://ift.tt/vML98P7 February 18, 2026 at 11:40PM

Show HN: I'm launching a LPFM radio station https://ift.tt/lRImzXi

Show HN: I'm launching a LPFM radio station I've been working on creating a Low Power FM radio station for the east San Fernando Valley of Los Angeles. We are not yet on the broadcast band but our channel will be 95.9FM and our range can been seen on the homepage of our site. KPBJ is a freeform community radio station. Anyone in the area is encouraged to get a timeslot and become a host. We make no curatorial decisions. Its sort of like public access or a college station in that way. This month we launched our internet stream and on-boarded about 60 shows. They are mostly music but there are a few talk shows. We are restricting all shows to monthly time slots for now but this will change in the near future as everyone gets more familiar with the systems involved. All shows are pre-recorded until we can raise the money to get a studio. We have a site secured for our transmitter but we need to fundraise to cover the equipment and build out costs. We will be broadcasting with 100W ERP from a ridgeline in the Verdugos at about 1500ft elevation. The site will need to be off grid so we will need to install a solar system with battery backup. We are planning to sync the station to the transmit site with 802.11ah. I've built all of our web infrastructure using Haskell, NixOS, Terraform, and HTMX: https://ift.tt/1xYoVqZ This is a pretty substantial project involving a bunch of social and technical challenges and a shoe string budget. I'm feel pretty confident we will pull it off and make it a high impact local radio station. The station is managed by a 501c3 non-profit we created. We are actively seeking fundraising, especially to get our transmit site up and running. If you live in the area or want to contribute in any way then please reach out! https://www.kpbj.fm/ February 18, 2026 at 01:45AM

Show HN: AsteroidOS 2.0 – Nobody asked, we shipped anyway https://ift.tt/5lendAE

Show HN: AsteroidOS 2.0 – Nobody asked, we shipped anyway https://ift.tt/l8kR0pi February 18, 2026 at 12:54AM

Show HN: I curated 130 US PDF forms and made them fillable in browser https://ift.tt/Qd3v5Su

Show HN: I curated 130 US PDF forms and made them fillable in browser Hi HN! I built SimplePDF 7 years ago, with the vision from day one to help get rid of bureaucracy (I'm from France, I know what I'm talking about) Fast forward to this week where I finally released something I had on my mind for a long time: a repository of the main US forms that are ready to be filled, straight from the browser, as opposed to having to find a PDF tool online (or local). I focused on healthcare, ED, HR, Legal and IRS/Tax for now. On the tech-side, it's SimplePDF all the way down: client-side processing (the data / documents stay in your browser). I hope you find the resource useful! NiP https://ift.tt/reWZTcz February 18, 2026 at 12:03AM

Show HN: Nerve: Stitches all your data sources into one mega-API https://ift.tt/5enHZNG

Show HN: Nerve: Stitches all your data sources into one mega-API Hi HN! Nerve is a solo project I've been working on for the last few years. It's a developer tool that stitches together data from multiple sources in real-time. A lot of high-leverage projects (AI or otherwise) involve tying data together from multiple systems of record. This is easy enough when the data is simple and the sources are few, but if you have highly nested data and lots of sources (or you need things like federated pagination and filtering), you have to write a lot of gnarly boilerplate that's brittle and easy to get wrong. One solution is to import all your data into a central warehouse and just pull it from there. This works, but 1) you need a warehouse, 2) you have an extra copy of the data that can get stale or inconsistent, 3) you need to write and manage pipelines/connectors (or outsource them to a vendor), and 4) you're adding an extra point of failure. Nerve lets you write GraphQL-style queries that span multiple sources; then it goes out and pulls from whatever source APIs it needs to at query-time - all your source data stays where it is. Nerve has pre-built bindings to external SAAS services, and it's straightforward to hook it into your internal sources as well. Nerve is made for individual developers or two-pizza teams who: -Are building agents/internal tools -Need to deal with messy data strewn across different systems -Don't have a data team/warehouse at their disposal, (or do, but can't get a slice of their bandwidth) -Want to get to production as quickly as possible Everything you see in the demo is shipped and usable, but I'm adding a little polish before I officially launch. In the meantime, if you have a project you'd like to use Nerve on and you want to be a beta user, just drop me a line at mprast@get-nerve.com (it's free! I'll just pop in from time to time to ask you how it's going and what I can improve :) ) If you want to get an email when Nerve is ready from prime-time, you can sign up for the waitlist at get-nerve.com. Thanks for reading! (EDIT: Nerve is desktop only! I'll put up a gate on the site saying as much.) https://ift.tt/mRuogij February 15, 2026 at 04:37AM

Show HN: AsdPrompt – Vimium-style keyboard navigation for AI chat responses https://ift.tt/QPaSFtg

Show HN: AsdPrompt – Vimium-style keyboard navigation for AI chat responses I use Claude throughout the day and kept getting annoyed by the same thing: selecting text from responses with the mouse. Overshoot, re-select, copy, click input, paste. Especially bad in long conversations where you want to reference something from 30 turns ago. asdPrompt is a Chrome extension that adds hint-based navigation (like Vimium) to AI chat interfaces. Cmd+Shift+S activates the overlay, hint labels appear next to every text block. Type a letter to select a block, then keep typing to drill down: block → sentence → word. Enter copies, or you can press an action key (e, d, x) to inject a follow-up prompt ("elaborate on [selection]") directly into the chat input. Works on claude.ai, chatgpt.com, and gemini.google.com. Adapts to light/dark themes. Free. Built the initial MVP in 2 days using Claude Code — the adapter architecture, NLP segmentation pipeline, and Playwright test harness would have taken a month without it. Tech details for the curious: site-specific DOM parsers behind an adapter interface, text segmentation via compromise.js with regex fallbacks for technical content (paths, camelCase break NLP libraries), bounding rectangles calculated via Range API + TreeWalker, overlay isolated in Shadow DOM. Tested with Playwright visual regression. The landing page has an interactive tutorial where you can try the full drill-down mechanic without installing. Happy to talk about the implementation. https://asdprompt.com/ February 16, 2026 at 10:58PM

Show HN: Please hack my C webserver (it's a collaborative whiteboard) https://ift.tt/YU8G5M2

Show HN: Please hack my C webserver (it's a collaborative whiteboard) Source code: https://ift.tt/u7Otw2F https://ced.quest/draw/ February 16, 2026 at 12:27AM

Show HN: An open-source extension to chat with your bookmarks using local LLMs https://ift.tt/6eNA5li

Show HN: An open-source extension to chat with your bookmarks using local LLMs I read a lot online and constantly bookmark articles, docs, and resources… then forget why I saved them. Also was very bored on Valentines, so I built a browser extension that lets you chat with your bookmarks directly, using local-first AI (WebLLM running entirely in the browser). The extension downloads and indexes your bookmarked pages, stores them locally, and lets you ask questions. No server, no cloud processing, everything stays on your machine. Very early but it works and planning to add a bunch of stuff. Did I mentioned is open-source, MIT licensed? https://ift.tt/MOtixdn February 15, 2026 at 10:31PM

Show HN: Microgpt is a GPT you can visualize in the browser https://ift.tt/WXZkdMi

Show HN: Microgpt is a GPT you can visualize in the browser very much inspired by karpathy's microgpt of the same name. it's (by default) a 4000 param GPT/LLM/NN that learns to generate names. this is sorta an educational tool in that you can visualize the activations as they pass through the network, and click on things to get an explanation of them. https://ift.tt/KHJqQnx February 16, 2026 at 12:10AM