Show HN: 20 years of Hacker News discussions, clustered and visualized We took the top 3 HN stories every day since October 2006 (~21K stories total), ran topic clustering on them, and visualized how topics rise and fall over time. You can zoom into…

Show HN: Time Keep – Location timezones, timers, alarms, countdowns in one place I kept running into this: timer on my laptop, alarm on my phone, timezone / discord timestamp conversion app in a separate tab. Switching between them was a hassle and …

Show HN: Passport Globe (See where your passport takes you) Just a cool visual way to see where you can go around the world. It also supports multiple passports. https://hariharan.uno/globe March 21, 2026 at 10:43PM

Show HN: EchoLive – Read-it-later app that reads to you with 600 AI voices https://echolive.co/ March 21, 2026 at 07:37AM

Show HN: Deterministic security solution for AI agents – OpenClaw and 2 more I wanted to share a solution that I made initially for myself for OpenClaw, that helps control what your ai agents can reach when you let it do stuff without impacting its …

Show HN: I fixed FFmpeg's subtitle conversion (the bug from 2014) FFmpeg converts everything except subtitles across format boundaries. SRT to Blu-ray PGS? "Subtitle encoding currently only possible from text to text or bitmap to bitmap.&qu…

Show HN: Korru, Web App Catalog In this release you can now filter by categories. As the vast majority of apps do not specify categories, I will progressively add them manually. https://korru.app March 21, 2026 at 04:34AM

Show HN: Singularity-Claude – Self-Evolving Skills for Claude Code https://ift.tt/w69j2Pl March 20, 2026 at 04:43AM

Show HN: Sonar – A tiny CLI to see and kill whatever's running on localhost https://ift.tt/CgMkJUn March 20, 2026 at 02:59AM

Show HN: Cybertt – Cybersecurity Tabletop https://cybertt.xyz/ March 20, 2026 at 02:29AM

Show HN: Play 90s classic X-Com – UFO Defense in the browser via WASM https://ift.tt/g7MemZ3 March 19, 2026 at 04:52AM

Show HN: Agentic Copilot – Bring Claude Code, OpenCode, Gemini CLI into Obsidian Obsidian plugin that connects to CLI agents you already have installed. No built-in LLM integration, no API keys to configure in the plugin. It spawns your tool as a ch…

Show HN: Ripl – A unified 2D/3D engine for Canvas, SVG, WebGPU, and the Terminal After several years, with a small hiatus in the middle, I've finally got Ripl to the point of being published. Ripl is a library for rendering 2D and 3D shapes to a…

Show HN: Claude-copy – Copy Claude Code output to clipboard I use Claude Code all day. The single best habit I've added: paste its output into a second model before letting it execute. Catches bad plans before they ship. The friction was copying…

Show HN: A client-side visual workflow builder for PDFs https://ift.tt/fsOVEKB March 18, 2026 at 01:59AM

Show HN: Pgit – A Git-like CLI backed by PostgreSQL https://ift.tt/2wSqlEf March 16, 2026 at 11:11PM

Show HN: QCCBot – Android in a browser tab, with AI agent control Eight months ago I watched a friend manage three walls of phones for his cross-border e-commerce operation — charging, swapping IPs, constantly worrying about bans. I asked myself: do…

Show HN: Android Native Reverse Tools The final piece of the Android decompilation/static analysis puzzle is native reverse engineering. After completing the decompilation of the Java/dex parts, I decided to challenge myself with the decompilation a…

Show HN: M68k assembly emulator that runs in the browser https://ift.tt/xb1SdLX March 17, 2026 at 03:10AM

Show HN: TLA PreCheck – TS DSL that proves state machines via TLA+ https://ift.tt/tTzpfXw March 16, 2026 at 06:11PM

Show HN: Signbee – An API that lets AI agents send documents for signature Hi HN, I built Signbee while working on AI agents that handle contracting workflows. The agents could draft agreements, negotiate terms, manage deals — but the moment a signa…

Show HN: I was laid off, so I built a NerdWallet for startup equity liquidity I was a software engineer at a late stage startup and was caught in a layoff this January. When I looked into exercising my options or getting liquidity, I realized the se…

Show HN: Multibot – Open-source multi-bot AI platform on Cloudflare Workers https://ift.tt/CByobGY March 16, 2026 at 01:07AM

Show HN: Signet – Autonomous wildfire tracking from satellite and weather data I built Signet in Go to see if an autonomous system could handle the wildfire monitoring loop that people currently run by hand - checking satellite feeds, pulling up wea…

Show HN: AgentMailr – dedicated email inboxes for AI agents I kept running into the same problem while building AI agents: every agent that needs email ends up sharing my personal inbox or a single company domain. That breaks attribution, creates de…

Show HN: MCP servers inside Antigravity are underrated – tried 2 of them https://www.youtube.com/watch?v=QUbximJiuNs March 14, 2026 at 11:13PM

Show HN: Chat Daddy – all your LLM chats in a super light terminal Claude kept crashing, stupid electron apps. So I made a super light terminal program in rust. As a plus, it syncs across all your local machines too. feel free to clone it and make i…

Show HN: AgentArmor – open-source 8-layer security framework for AI agents I've been talking to founders building AI agents across fintech, devtools, and productivity – and almost none of them have any real security layer. Their agents read emai…

Show HN: Vibe-budget – CLI to estimate LLM costs before you start vibe coding I built vibe-budget because I kept burning tokens without knowing the cost upfront. You describe your project in plain English (or Spanish), and it detects the tasks invol…

Show HN: HAL – Harmful Action Limiter: Lean command guard for AI coding agents. https://ift.tt/jdsXW9v March 13, 2026 at 07:36AM

Show HN: Algorithms and Data Structures in TypeScript – Free Book (~400 Pages) I started writing this book 10 years ago in JavaScript, got through a few chapters (asymptotic notation, basic techniques, start of sorting), and then abandoned it. Recen…

Show HN: What was the world listening to? Music charts, 20 countries (1940–2025) I built this because I wanted to know what people in Japan were listening to the year I was born. That question spiraled: how does a hit in Rome compare to what was cha…

Show HN: fftool – A Terminal UI for FFmpeg – Shows Command Before It Runs https://ift.tt/GuW719l March 13, 2026 at 03:08AM

Show HN: Elevators.ltd https://elevators.ltd March 12, 2026 at 04:13AM

Show HN: XLA-based array computing framework for R https://ift.tt/dNSk357 March 8, 2026 at 11:04PM

Show HN: Jurassic Park Unix System Kubernetes Viewer I made an app that allows you to view Kubernetes resources just like the unix system in Jurassic Park :) Unlikely to be used for anything serious, but with the tools available today I couldn't…

Show HN: Ory Lumen - faster, cheaper Claude Code with local semantic code search https://ift.tt/wtxuCDW March 11, 2026 at 06:49AM

Show HN: Silly Faces Tap on the canvas to create silly faces. Discover new brushes by combining them on the canvas. Used to be a React Native app from the pre-AI ages. Recently ported with AI to be just a wordpress plugin. https://ift.tt/Jmyi9BU Mar…

Show HN: Jottit – Publish in seconds, reviving my 2007 project with Aaron Swartz Aaron Swartz and I built Jottit in 2007 as a really simple way for anyone to make a page on the web in seconds. You just typed something, clicked a button, and you got …

Show HN: kitty-graphics.el – Images, LaTeX and PDFs in terminal Emacs https://ift.tt/jPMXIv9 March 11, 2026 at 12:52AM

Show HN: Hotwire Club – A Learning Community for Hotwire (Turbo/Stimulus/Rails) Hotwire Club publishes free technical tutorials on Hotwire, each linking to a solution on Patreon (around 2/3 free, the rest available on a paid plan that's 5$ per m…

Show HN: AI agent that runs real browser workflows I’ve been experimenting with letting an AI agent execute full workflows in a browser. In this demo I gave it my CV and asked it to find matching jobs. It scans my inbox, opens the listings, extracts…

Show HN: I wrote an application to help me practice speaking slower I’ve spoken fast and a bit unclearly my entire life. It’s one of those small curses you’re probably just born with. Speech therapy didn’t help and practicing on my own never really …

Show HN: Bunway – Express-compatible web framework for Bun Express developers moving to Bun face a full rewrite — every Bun framework (Hono, Elysia) has a completely different API. bunway keeps the exact same app.get(), app.post(), req, res, next pa…

Show HN: U-Claw – An Offline Installer USB for OpenClaw in China https://www.u-claw.org/ March 9, 2026 at 02:11AM

Show HN: Husky hook that blocks Git push until you do your pushups https://git-push.app March 9, 2026 at 01:27AM

Show HN: Codebrief – Make sense of AI-generated code changes I've been using Claude Code for a few months, and while it's amazing at writing code, reviewing the changes became a bottleneck. The diff is just files in alphabetical order. No co…

Show HN: Yumo.to, a map of 19,652 onsens in Japan I built Yumo.to because I wanted a map-first way to discover onsens in Japan without digging through booking sites. It currently covers 19,652 onsens across all 47 prefectures, built by merging natio…

Show HN: µJS, a 5KB alternative to Htmx and Turbo with zero dependencies I built µJS because I wanted AJAX navigation without the verbosity of HTMX or the overhead of Turbo. It intercepts links and form submissions, fetches pages via AJAX, and swaps…

Show HN: Open source drone that can hold cargo https://ift.tt/BtaECJN March 6, 2026 at 07:59PM

Show HN: Markdown-to-Book – Convert Markdown to KDP Ready PDFs and EPUBs Author here. I'm a software engineer who started writing hard science fiction on the side. I built this tool because I wanted to write in plain Markdown and go straight to …

Show HN: PenguWarpOS – OS SIM made in py for Linux newbies I made an OS sim in Python so linux newbies can learn how to navigate their system from terminal and break stuff without messing their system https://ift.tt/nb6VILK March 6, 2026 at 01:14AM

Show HN: Tailwatch – Hierarchical event monitor with push notifications https://tailwatch.dev March 5, 2026 at 11:13PM

Show HN: DevTrack – A personal dashboard to track your developer growth https://devtrack-rose.vercel.app March 5, 2026 at 03:30AM

Show HN: Anaya – CLI that scans codebases for DPDP compliance violations I built Anaya to solve a problem I kept seeing: India's DPDP Act is now enforceable (rules notified Nov 2025, deadline May 2027) but compliance is a code problem, not just …

Show HN: AlifZetta – AI Operating System That Runs LLMs Without GPUs Hi HN, I’m Padam, a developer based in Dubai. Over the last 2 years I’ve been experimenting with the idea that AI inference might not require GPUs. Modern LLM inference is often me…

Show HN: Your AI Slop Bores Me When the LLM so ahh you lowk take over its job https://ift.tt/MOHmNJg March 4, 2026 at 10:54PM

Show HN: Armalo AI – The Infrastructure for Agent Networks Hey HN — I'm Ryan, founder of Armalo AI ( https://armalo.ai ). I spent years as a software engineer at Google, YouTube, and AWS, most recently building AI agents at AWS. Watching those s…

Show HN: I made a zero-copy coroutine tracer to find my scheduler's lost wakeups https://ift.tt/Zoup1nk March 3, 2026 at 02:41AM

Show HN: Display folder sizes in Win11 Explorer's Size column https://ift.tt/Z3h5dKW March 3, 2026 at 07:35PM

Show HN: React-Kino – Cinematic scroll storytelling for React (1KB core) I built react-kino because I wanted Apple-style scroll experiences in React without pulling in GSAP (33KB for ScrollTrigger alone). The core scroll engine is under 1KB gzipped.…

Show HN: Rriftt_ai.h – A bare-metal, dependency-free C23 tensor engine Hi HN, I built rriftt_ai.h because I hit my breaking point with the modern deep learning stack. I wanted to train and run Transformers, but I was exhausted by gigabyte-sized Pyth…

Show HN: Axiom – structural OCR for handwritten STEM notes I built Axiom after repeatedly running into the same problem with my own handwritten STEM notes. On paper, everything looks clean — equations aligned, steps grouped properly, tables laid out…

Show HN: Omni – Open-source workplace search and chat, built on Postgres Hey HN! Over the past few months, I've been working on building Omni - a workplace search and chat platform that connects to apps like Google Drive/Gmail, Slack, Confluence…

Show HN: Optimal: Cost effective infra with agentic inbox During a hackathon, I build this platform that will help compute cost optimal infra plans to run ML workloads. Plans are computed based on the nature of workload, reasearch papers for custom …

Show HN: Built a tool that turns your GitHub commits into build-in-public posts I kept failing at building in public for the same reason every time: not fear of judgment, just the blank page after a long day of shipping. Something always happened. B…