Show HN: Smartly – Plain English to shell commands, with GNU/BSD awareness I built Smartly because I kept knowing what I wanted to do in the...

Show HN: Yantra – an LALR(1) parser generator for C++ Yantra is a C++ parser generator: lexer, parser, and AST walker all generated from one...

Show HN: Kanmaps – Product roadmaps like videogame skill trees Hi HN! I've made it possible for you to make product roadmaps like you...

Show HN: Real-time raytracing around a black hole Another visualization that I've been wanting to make for a long time, and is now over ...

Show HN: Using 2D DFT, dithering, etc. to maximize eInk manga image quality Kindle Comic Converter optimizes black & white (or color) co...

Show HN: I created a BGP-based blackhole system that you can set up in minutes Hey friends, I've been working on this idea since 2019, a...

Show HN: Ledge.sh – Runnable Markdown Notes Hi HN, Ledge is a Markdown notebook that runs shell commands, code, SQL, etc from inside your ow...

Show HN This is origintracer a low level observability tool of the modern web stack. It observes nginx, Gunicorn, asynchronous Python, Uvico...

Show HN: Stepgate – AI agents that can't skip steps, in one portable file https://ift.tt/tISubDa September 28, 2026 at 01:57AM

Show HN: Fusor – Like Vue, but the logic is Rust I've been building Fusor. It's a reactive web framework for Rust where the template...

Show HN: Trail – new kind of logic game https://ift.tt/7gP2Mjq September 27, 2026 at 08:02AM

Show HN: An interactive debugger for the Mornington Crescent esolang Originally put together ten years ago, I've migrated this project o...

Show HN: Shipwithmuse.live – a catalog of things people built with Muse https://shipwithmuse.live/ September 27, 2026 at 06:38AM

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 c...

Show HN: TiddlyInstall – Single HTML file that makes cross-platform installers Hello HN, I wanted to show you some new software I designed (...

Show HN: A benchmark comparison of C++ vs. Node.js performance https://vikky2810.github.io/blog/cpp-vs-node/ September 25, 2026 at 06:25AM

Show HN: Avoid smooth spinners, use low-FPS spinners I got so annoyed by various apps (VScode, Chromium, Firefox, Thunderbird) burning CPU/G...

Show HN: ChaosTree – Cache-Aware Java NavigableMap and NavigableSet Library https://ift.tt/MSUVuDR September 24, 2026 at 02:07AM

Show HN: An open-source manufacturing ERP/MES/QMS https://ift.tt/xu2yglD September 24, 2026 at 01:45AM

Show HN: Make cursed fonts like Times New Bastard A joke tool that abuses OpenType's ligature feature to mix fonts. It works pretty fast...

Show HN: Fjordfall – Take the long way down https://ift.tt/NZ8zdq7 September 23, 2026 at 11:19PM

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

Show HN: A fast, offline Markdown viewer for macOS built in Swift Hi HN! I made Tim’s Markdown Reader because I wanted a free, open-source a...

Show HN: WavexAI – Unlimited tokens for a fixed cost https://wavexai.dev/ September 22, 2026 at 11:24PM

Show HN: An atlas of system designs with interactive architecture diagrams https://atlas-sysdes.vercel.app/ September 22, 2026 at 11:54AM

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 clim...

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

Show HN: Jev Powered Obsidian Search https://ift.tt/8q7ewNU September 22, 2026 at 01:05AM

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 po...

Show HN: Try Omarchy for Windows – Full Omarchy Desktop on Windows No VM setup or configuration. Download TryOmarchy.exe, follow the prompts...

Show HN: jevals – replacing LLM judges with typed Jev decisions https://ift.tt/Hvt43pZ September 20, 2026 at 11:39PM

Show HN: Forexfin – Trading calculators, alerts and a journal in one place Some many years ago I started trading here and there and whenever...

Show HN: Procedurally Generated Mineral Gems I wanted to give users of a new app I'm working on a way to generate their own custom icon....

Show HN: An OSS Python dependency scanner for exploited, unmaintained packages I built an open source python dependency scanner that will sc...

Show HN: TypeSeer – on-device autocomplete for every text field on macOS https://typeseer.com/ September 18, 2026 at 10:35PM

Show HN: An open Add/Search evaluation framework for agent memory Hi HN, We are trying to make different Agent Memory systems comparable wit...

Show HN: I made a browser tool that creates newspaper and book text match cuts https://papereffects.site September 17, 2026 at 11:47PM

Show HN: I built a new version of my fun spatial 3D online meeting app Hi HN! flat.social is a fun spatial online meeting app for remote tea...

Show HN: Friday – Self-hosted persistent memory for AI coding agents (MCP) https://ift.tt/WjULGNy September 16, 2026 at 07:55PM

Show HN: Glu – installing Homebrew packages 2x faster on macOS I wanted to see how fast Homebrew installs could get if end-to-end install ti...

Show HN: Thurbox – A tmux-based TUI and CLI for local AI agent orchestration https://ift.tt/iIaVYUN September 16, 2026 at 02:25AM

Show HN: A chess analyzer that runs in the browser I play chess casually and usually struggle to figure out why Lichess analysis say my move...

Show HN: Agenttik – work on multiple projects in parallel with AI agents Hi! I've been reading HN daily for almost 16 years. Really glad...

Show HN: Sunk Cost – How long until a local LLM rig pays for itself? I kept hearing "just buy a Mac and run models locally, it pays for...

Show HN: Hazzel – a tiny coding agent, Bring your own keys https://ift.tt/6fUB0Io September 15, 2026 at 01:15AM

Show HN: An open-source control plane for your company's AI agents https://ift.tt/xJ9mLwp September 15, 2026 at 12:16AM

Show HN: Macros with a Behringer FCB1010 MIDI Pedalboard in macOS https://ift.tt/o5cBiUp September 15, 2026 at 12:01AM

Show HN: Dep-radius, know which dependency updates touch your code https://ift.tt/FEfKtOy September 13, 2026 at 11:57PM

Show HN: Surraura – audio on your Mac in a simulated environment (Helps my ADHD) I built an app to help my late diagnosed ADHD - through sou...

Show HN: See Sounds on Your Webcam https://ift.tt/aeUrpQW September 10, 2026 at 03:43PM

Show HN: We built a local-first Android agent. Then Meta launched Muse https://creepy.im/ September 12, 2026 at 10:26AM

Show HN: Don't Hit Send – the model answers while you type Type. The model is already answering. There is no send button. Left pane is o...

Show HN: Next Notes – local dictation, meeting notes, and actions app https://ift.tt/NHljnpc September 12, 2026 at 03:27AM

Show HN: Graphify C# – Compiler-accurate Find Usages for coding agents https://ift.tt/uveN4S8 September 12, 2026 at 01:16AM

Show HN: Kern Agent – See inside your agent's brain https://ift.tt/JnexHrs September 11, 2026 at 02:57AM

Show HN: Learn programming by building something you want https://codeset.ai/ September 11, 2026 at 01:20AM

Show HN: What if the speed of light was 5 km/h? I've always wanted to make a visualization where the speed of light was scaled down to h...

Show HN: Hydra – Open-source agentic terminal with a PTY daemon https://ift.tt/gfGn4yJ September 9, 2026 at 10:51PM

Show HN: Browser-based Nginx config generator with live preview Generates Nginx server block configs for static sites, PHP, Node.js and rev...

Show HN: VolAnti – Open-source acoustic detector for fibre-optic FPV drones This project has been a month in the making, and 9 fully functio...

Show HN: SimpleW – Lightweight C# Web Server with optional addons Hi HN, I’m the author of SimpleW, an MIT-licensed .NET web server for stan...

Show HN: Browse 27 years of movie ticket stubs in ThreeJS edit - reposted with the link but think I am too late to delete this one now This ...

Show HN: HP Jornada 545 Emulator https://ift.tt/mJEZ7Hx September 8, 2026 at 12:21AM

Show HN: Animaxxing – get agents to animate the shit out of your website https://animaxxing.com September 7, 2026 at 11:14PM

Show HN: Golden hour API and a 3D globe of the best light https://ift.tt/3En02QT September 7, 2026 at 05:18AM

Show HN: Lantunnel – a P2P-first private mesh for reaching your LANs https://ift.tt/K0c5rUL September 7, 2026 at 04:47AM

Show HN: GET Together – A social network where you don't need POST to Post https://gettogether.dev September 7, 2026 at 02:41AM

Show HN: Keen Bean – Mac meeting notes that draft the spec while you talk https://keenbean.app/ September 6, 2026 at 10:53AM

Show HN: OpenMonitor – vendor neutral web monitoring cloud agent https://www.openmonitor.website/ September 6, 2026 at 01:03AM

Show HN: Cowbull – Wordle-like game where you only get match counts CowBull is a word game where you have to find the hidden four-letter wor...

Show HN: I made Blocknado, an orbital stacker. Think Tetris with square rings I've loved stacker type games for as long as I can remembe...

Show HN: TimerVana a Local-first scheduler for real world routines Hi HN, I’m the creator of TimerVana. It's not just "another time...

Show HN: Interactive map of the Japanese address system I had a hard time understanding the Japanese address system. Parts of addresses have...

Show HN: Word42, a wordprocessor inspired by MS Word and Abiword https://word42.org/ September 4, 2026 at 05:39AM

Show HN: Reactor Atlas Hi HN, I'm a nuclear engineer and tech entrepreneur. After working for 3 years in the National Atomic Energy Comm...

Show HN: I made a word building game supporting anagrams and one handed use Hi everyone, Wanted to share a game I built. It's called Uns...

Show HN: The cheapest GPU cloud – H100s at $2.04/HR, H200s at $3/HR https://compute.cheap/ September 3, 2026 at 03:50AM

Show HN: Open source ML programming language playground After joining a ML Study group and trying Google Colab I decided to create my own ar...

Show HN: Markdown Gatekeeper – one current source per topic for AI agents https://ift.tt/t4DLQZm September 2, 2026 at 03:48AM

Show HN: Three Pins a daily 3-hole golf game in the browser https://threepins.golf/ September 1, 2026 at 06:45PM

Show HN: Notes Plus – A Markdown Apple Notes Clone with Latex, Excalidraw etc. tldr: clone of Apple Notes, but every note is a local Markdow...

Show HN: Rails Baseline – a Rails SaaS starter with agent-readable architecture I have built a lot of SaaS Rails apps over the last decade+....