Show HN: Hacker Atlas - A map of what Hacker News talks about https://bit.ly/46GEdVY

Show HN: Hacker Atlas - A map of what Hacker News talks about I built a tool to explore HN topics and how they change over time. Currently covers 2024 to today. Is it useful? What's missing? https://bit.ly/4z46TEB September 25, 2026 at 02:37PM

Show HN: TiddlyInstall – Single HTML file that makes cross-platform installers https://bit.ly/4rus7J9

Show HN: TiddlyInstall – Single HTML file that makes cross-platform installers Hello HN, I wanted to show you some new software I designed (and Claude implemented.) It's called TiddlyInstall. TiddlyInstall is a single-page website that lets you easily build installers for all your projects. What makes TiddlyInstall unusual is there is no software to download and everything is able to work offline. Based on the project that it's inspired by: you can download TiddlyInstall as a HTML file and use it to make working binaries for Windows, Linux, and Mac. How it works: Most installers / binaries are custom per project. But with very few modifications they can be made general-purpose. Installers can be made to follow meta-data which can be vouched for by hashes in their file names, embedded data, and signatures. That means new binaries only need meta-data to be changed which can be done entirely in the browser. For the installers themselves NSIS was chosen for its amazing Windows support. Otherwise, the rest is shell scripting. I am very excited about it and would love people to try it out. All the code is open source under MIT. Feel free to report issues on the Github at https://bit.ly/4yXkCge Credits: Claude (and the authors whose works it was trained on :/) deserve huge credits for the implementation. It would have taken me months to code this all this. This project is not affiliated with TiddlyWiki -- though I am heavily inspired by that project! If anyone thinks my work is cool -- I'm currently looking for new opportunities. Feel free to reach out if there's a match (matthew@roberts.pm.) https://bit.ly/4yXkD3M September 25, 2026 at 08:25AM

Show HN: A benchmark comparison of C++ vs. Node.js performance https://bit.ly/4hbBGsX

Show HN: A benchmark comparison of C++ vs. Node.js performance https://bit.ly/4rrXK5S September 25, 2026 at 06:25AM

Show HN: Reteach – AI tutor that feels human https://bit.ly/4rwfWvm

Show HN: Reteach – AI tutor that feels human Tutoring is very expensive. reteach makes it cheap. https://bit.ly/3Thxgrj September 25, 2026 at 07:26AM

Show HN: Avoid smooth spinners, use low-FPS spinners https://bit.ly/4hbvCR8

Show HN: Avoid smooth spinners, use low-FPS spinners I got so annoyed by various apps (VScode, Chromium, Firefox, Thunderbird) burning CPU/GPU cycles and and making my laptop hot and sluggish with spinners on otherwise static content, that I made this little page to fight this. https://bit.ly/3TLgHnP September 25, 2026 at 03:52AM

Show HN: An open-source manufacturing ERP/MES/QMS https://bit.ly/4xEOmxa

Show HN: An open-source manufacturing ERP/MES/QMS https://bit.ly/4xEOnkI September 24, 2026 at 01:45AM

Show HN: Fjordfall – Take the long way down https://bit.ly/4xNYzHT

Show HN: Fjordfall – Take the long way down https://bit.ly/4hlrUTN September 23, 2026 at 11:19PM

Show HN: Sbm: plain-text bookmarks synced across terminal, browser, Android https://bit.ly/4hFWBEC

Show HN: Sbm: plain-text bookmarks synced across terminal, browser, Android https://bit.ly/4rqqzjf September 23, 2026 at 03:54AM

Show HN: WavexAI – Unlimited tokens for a fixed cost https://bit.ly/4jjjTRO

Show HN: WavexAI – Unlimited tokens for a fixed cost https://bit.ly/4rqDmSJ September 22, 2026 at 11:24PM

Show HN: An atlas of system designs with interactive architecture diagrams https://bit.ly/4xCtfeY

Show HN: An atlas of system designs with interactive architecture diagrams https://bit.ly/4y8uLXh September 22, 2026 at 11:54AM

Show HN: WebGCM – a global climate model running in the browser on WebGPU https://bit.ly/3VJofYE

Show HN: WebGCM – a global climate model running in the browser on WebGPU I started this four and a half years ago. I wanted to build a climate model as both a toy and educational tool that I could visualize in a web browser. I have always been interested in meteorology and asked r/ClimateScience for advice on the math and physics on building an in-browser climate model as an educational tool, and a few people said it was far too ambitious. They were right. I could build the geometry, an icosahedral hexagonal grid on a globe, and I have an intuitive understanding of the math but integrating the Navier-Stokes equations and the physics proved to be too difficult for me, and the closest I got after nearly of month of work was a model that blew up within two simulated days. Fast forward 4 and a half years. I figured that if models like Claude and GPT Astra could solve a milennium prize problem about fluid dynamics then they could help me fix the broken model and iterate on it until my vision was realized. On Friday, I threw down $200 for a Claude Max subscription, and this is the result of a single weekend's work on top of where I had left off. What it is now, in technical terms: a hydrostatic primitive-equation atmosphere on that hex grid (the TRiSK scheme MPAS uses), 27 levels, about 41,000 cells at 110 km, with grey radiation, moist convection, a boundary layer, sea ice, a land surface with snow, a two-layer ocean and real topography. Every kernel runs on the GPU; on my MacBook Pro (M1 Max) it does about 70 simulated hours a minute from a six-year spin-up, hence the 50 MB first load. You can color the globe by twenty-odd fields, animate wind or currents, draw isobars, or view it from space under the model's own sun. The URL captures the view, so links open specific places. Caveats: an educational model, not a validated one. It runs about four degrees colder than Earth and I'm still tuning it, the ocean is crude and shallow, and it needs WebGPU (Chrome, Edge, Safari 26) for best performance. It's currently tuned for my specific machine specs but I suspect it will run well on most desktop-class Apple Silicon machines from the past 5 years. Source and design notes: https://bit.ly/4hi7evN Edit: If it runs really well on your machine, something well above 100 simulated hours per minute (displayed on the top-left of the page), let me know your machine specs! You should also try to reload the page with `?N=128` in the query params and it will re-grid to an even higher resolution. But it will take a few simulated days to settle down after the initial shock from the changed resolution. If you end up tyring this, check out the Temperature overlay at 10 hPa height and you should see Gravity Waves [1] rippling through the top of the atmosphere! [1] https://bit.ly/4xD0sag https://bit.ly/4hoUCmT September 21, 2026 at 10:15PM

Show HN: Primescript – Academic Markdown editor with vector search and LaTeX https://bit.ly/3TkQCM1

Show HN: Primescript – Academic Markdown editor with vector search and LaTeX https://bit.ly/4y3vZDb September 22, 2026 at 03:29AM

Show HN: Jev Powered Obsidian Search https://bit.ly/4hlr9dB

Show HN: Jev Powered Obsidian Search https://bit.ly/3Ti8Cqj September 22, 2026 at 01:05AM

Show HN: Gdocs-me-up: a high-fidelity Google Docs exporter https://bit.ly/4hcNeL5

Show HN: Gdocs-me-up: a high-fidelity Google Docs exporter Over the years I had written dozens of Google Docs documents, that I wanted to post to my website. Not only Google Docs's publish feature is broken and incomplete, Google does not index Google Docs either. So I set out to fix it for myself using AI agents. Sharing here in case someone else finds it useful. https://bit.ly/4hgd9BQ September 21, 2026 at 01:46AM

Show HN: Try Omarchy for Windows – Full Omarchy Desktop on Windows https://bit.ly/4xwXuEl

Show HN: Try Omarchy for Windows – Full Omarchy Desktop on Windows No VM setup or configuration. Download TryOmarchy.exe, follow the prompts, and you'll be booted into a full Omarchy desktop within minutes. No dual booting or repartitioning required. Under the hood it uses QEMU + WHPX, with GPU acceleration where supported. https://bit.ly/4yIFCXW September 20, 2026 at 11:56PM

Show HN: Lightspeed, bidirectional WebSockets for Laravel (with asteroids demo) https://bit.ly/4rpbTko

Show HN: Lightspeed, bidirectional WebSockets for Laravel (with asteroids demo) Hi HN! Laravel has worked with websockets for years but generally speaking it's a one way push architecture (i.e. http in, sockets out). Lightspeed is kind of like node in that it's a single server that serves your http and your websockets all under one roof. Auth runs in 0.03ms (a Redis read, no database). Your Laravel handler runs inside the full container and the reply comes back down the same socket. I think this could be really cool for creating new ways of working with Laravel. Anyway, I put together a live demo to show it in action. Basically a cross between slither.io and Asteroids. Game here: https://bit.ly/4h63cba Repo here: https://bit.ly/4hf9RP5 Note: This is 0.1.0, the API may change before 1.0. It needs the Swoole extension and Redis. MIT. September 21, 2026 at 12:02AM

Show HN: Set, offline Markdown note-taking app with device-to-device sync https://bit.ly/4xxa0mY

Show HN: Set, offline Markdown note-taking app with device-to-device sync Hi HN. I am an avid user of Notion ( https://bit.ly/4rjCQG2 ) and really like the ergonomics of its block-based editor, but with how the product is evolving I felt I was missing a simple "single-player" experience of just taking notes and jotting down my thoughts. Hence, Set exists. It's in beta and all feedback is appreciated. You can use the app in the browser but notes are saved only to that browser session. The device-to-device sync and local dictation is desktop only. All notes are saved as markdown files in a folder you choose on the desktop app. Source: https://bit.ly/4romjRk Releases are available for macOS, Windows (x64), and Linux (x64 only for now): https://bit.ly/4779h14 https://bit.ly/4xEcQql September 19, 2026 at 11:26PM

Show HN: Flyover Country – guide to the window seat with AR https://bit.ly/4iDfhG7

Show HN: Flyover Country – guide to the window seat with AR Just released a ground-up rebuild of our long abandoned app Flyover Country. Its whole thing is to tell you fun things about what you're flying over. I'm particularly excited about the new augmented reality mode that overlays maps and points of interest on your camera view as you point your phone out the window. The 3d window view mode is also pretty neat! It's free and works offline, just load your flight up beforehand. This is a tough app to test for obvious reasons so any feedback from folks trying it out in the sky is suuuuper valuable. Please email me at shane@flyovercountry.app with any notes! https://bit.ly/4iE6JP8 September 19, 2026 at 07:13PM

Show HN: Seal – Letters and passwords that open for your family after you die https://bit.ly/4hcXXFp

Show HN: Seal – Letters and passwords that open for your family after you die I'm a CS undergrad who has developed an interest in hardware keys ever since I used them for a school project a few years ago. I made a little chat app that only allows users to chat if they registered a key, nothing else. The backstory of how I came to work on Seal (this project): was that I was generating ideas with Claude to come up with an idea that only hardware keys could make into software. I was thinking about physical house keys and what you could do with those, but in software. I was already making iOS apps with Claude, and I came up with this idea and it sounded good. I had already worked on a few projects involving hardware keys and I already loved them. Today I submitted my latest app, Seal, for review in the app store. Seal is an iOS app for iPhone and iPad that lets you write an Envelope (an encrypted bundle of passwords, photos, voice memos, etc...) for all of your loved ones when you're gone. You can register hardware keys and assign identities for each person. Then you can create Envelopes and assign them to the key that you want to distribute. They plug in the key to their phone and are ready to receive an Envelope from you. If you don't log into the app for months, one of your designated key holders can start the process of opening the Sealed Envelope. You, as the writer of the letters, get weeks of warnings to check in at least once before the letters open. After 90 days of countdown, 21 days of warnings, and 14 days of grace, the envelope opens for each person they met IRL and exchange keys with. No one else can read the envelope or see the photos (even the key holders, Apple, or me) unless that envelope was designated for that person. What's different from a password manager like 1Password: emergency access there hands one person your whole vault through the company's server, so it needs that company to still exist and be honest on the day it matters. Seal gives each person their own envelope nobody else can open, and there's no company in the middle. There's also no server at all besides a free Cloudflare static site. The encrypted bundles of passwords and photos are in Cloud Kit. Sign-in/identity is a passkey Face ID/Touch ID or a Hardware Key. It's all Crypto Kit, so there's no dependencies required. Currently, it's just me and Claude working on this. It hasn't been independently audited by anyone, and it's iPhone only for now. Please do not put a live seed phrase in it yet. If anyone has advice for me as the lead developer for this project, I'm all ears! You can help contribute on the github source code repository page if you'd like. My mom likes this app especially because she's into crypto and she needed a way to pass down or give away the seed phrases for her wallets to all 3 kids without any question about who gets what and when. In the end, there's no confusion or hurt feelings after the fact with just crypto. Thank you for reading and let me know if you have any questions or concerns for me or the project! Source: https://bit.ly/3TCrQY0 Site with limits and objections pages: https://bit.ly/4y6k7R9 Free on TestFlight while the App Store version is in review: https://apple.co/4hdUwhU https://bit.ly/3TCrQY0 September 19, 2026 at 05:28AM

Show HN: An OSS Python dependency scanner for exploited, unmaintained packages https://bit.ly/4yN5Qsp

Show HN: An OSS Python dependency scanner for exploited, unmaintained packages I built an open source python dependency scanner that will scan and flag packages with known exploit CVEs(CISA's Known Exploited list and FIRST EPSS) and unmaintained packages that have not had a release or commit in 2 years. Theres also claude hook that will make your AI agent not install these type of packages included in this repo. The full mechanism is in the readme of the project, this was just a brief summary. https://bit.ly/4yDtdoe September 19, 2026 at 01:27AM