Show HN: Blotter, a live map of LAPD radio activity https://blotter.fm April 28, 2026 at 02:15AM

Show HN: PrePrompt – rewrites vague prompts before they reach the LLM https://preprompt.org/ April 28, 2026 at 03:49AM

Show HN: 49Agents – Infinite canvas IDE for AI agents https://ift.tt/7HyOKEW April 28, 2026 at 01:36AM

Show HN: Logic Designer – Webapp i updated my digital logic webapp to 0.5.1 https://logic-designer.github.io/logic-designer-main/ April 26, ...

Show HN: Startup Equity Adventure Game I put this together (with Claude) as a semi-gamified way for folks to learn about startup equity. Tak...

Show HN: LLM-wiki – One command Karpathy's wiki with QMD search for Claude/Codex https://ift.tt/SfwxHQ0 April 25, 2026 at 11:29PM

Show HN: Draw Together Online A simple page where you can draw with other people. https://ift.tt/1EVBFs4 April 26, 2026 at 03:36AM

Show HN: DDoS detection in 0.9s, tested against a 48 Gbps attack live https://ift.tt/PsXdkSB April 26, 2026 at 01:27AM

Show HN: VT Code – Rust TUI coding agent with multi-provider support Hi HN, I built VT Code, a semantic coding agent. Supports all SOTA and ...

Show HN: RoboAPI – A unified REST API for robots, like Stripe but for hardware Every robot manufacturer ships a different SDK and a differen...

Show HN: Nimbus – Browser with Claude Code UX Hi HN, I'm Anil. Nimbus is a desktop browser with an AI agent built into it. The UX is sha...

Show HN: SQL Protocol – learn SQL by running real queries, with 1v1 PvP https://sqlprotocol.com April 24, 2026 at 12:44AM

Show HN: I built a toy that plays grandma's stories when my daughter hugs it This was a project I built for my daughter's first birt...

Show HN: OpenDeck – DIY MIDI Platform Based on Zephyr RTOS This is OpenDeck, my own platform for building custom MIDI controllers. I've ...

Show HN: Ghost Pepper Meet local meeting transcription and diarization 100% local & private transcription engine for macOS. Captures ...

Show HN: MemFactory: Unified Inference and Training Framework for Agent Memory Memory-augmented Large Language Models (LLMs) are essential f...

Show HN: Agent Brain Trust, customisable expert panels for AI agents Agent Brain Trust lets you summon a panel of real, named experts to cri...

Show HN: Almanac MCP, turn Claude Code into a Deep Research agent I am Rohan, and I have grown really frustrated with CC's search and re...

Show HN: Palmier – bridge your AI agents and your phone Hi HN — I built Palmier. Palmier bridges your AI agents and your phone. It does two ...

Show HN: Mimi in the browser – hear the semantic/acoustic split https://ift.tt/GypNTam April 21, 2026 at 12:33AM

Show HN: GeoFastMapAPI – open-source Fast vector and raster server for mapmakers Hello HN, built this project to unify cutting edge tech for...

Show HN: Brygga – A modern, fast, feature-rich IRC client for macOS Brygga is in early development. The core client works end-to-end (connec...

Show HN: How context engineering works, a runnable reference I've been presenting at local meetups about Context Engineering, RAG, Skill...

Show HN: Coelanox – auditable inference runtime in Rust (BERT runs today) PyTorch and ONNX Runtime tell you what came out. They can't te...

Show HN: Sostactic – polynomial inequalities using sums-of-squares in Lean Current support for nonlinear inequalities in Lean is quite limit...

Show HN: Irl.rent – What renters pay, not what's listed in SF April 18, 2026 at 01:40AM

Show HN: Mind-OS – First free online AI dependency self‑assessment https://iamalex-afk.github.io/human-os-patch-33-protocols/ April 17, 2026...

Show HN: Ask your AI to start a business for you, resolved.sh Start with a FREE instant website for your AI on the open internet, then work ...

Show HN: Free API and widget to look up US representatives https://ift.tt/4cyRzOV April 17, 2026 at 01:45AM

Show HN: A collection of GPT-IMAGE-2 prompts from X(Twitter) A living collection of real prompts shared by creators on Twitter, covering dat...

Show HN: Spice simulation → oscilloscope → verification with Claude Code I built MCP servers for my oscilloscope and SPICE simulator so Clau...

Show HN: Sudomake Friends, personalized AI personas in a Telegram group chat Virtual AI friends, personalized to you, that chat you (or don...

Show HN: Omi – watches your screen, hears conversations, tells you what to do Spent 4 months and built Omi for Desktop, your life architect:...

Show HN: StockFit API – structured SEC EDGAR data with a free tier https://ift.tt/GeiCY0s April 15, 2026 at 02:53AM

Show HN: Keynot – Kill PowerPoint with HTML https://ift.tt/c4bEaZK April 15, 2026 at 03:05AM

Show HN: OpenRig – agent harness that runs Claude Code and Codex as one system I've been running Claude Code and Codex together every da...

Show HN: Terminal-Wrench, a dataset of 331 realistic hackable environments I want to share a new dataset of 331 reward-hackable environments...

Show HN: Mcptube – Karpathy's LLM Wiki idea applied to YouTube videos I watch a lot of Stanford/Berkeley lectures and YouTube content on...

Show HN: Lint-AI by RooAGI, a Rust CLI for AI Doc Retrieval We’re RooAGI. We built Lint-AI, a Rust CLI for indexing and retrieving evidence ...

Show HN: Stork – MCP server so Claude/Cursor can search 14k MCP servers AI tools https://www.stork.ai April 12, 2026 at 08:49PM

Show HN: A social feed with no strangers Grateful is a gratitude app with a simple social layer. You write a short entry, keep it private or...

Show HN: Toy Python Lisp interpreters based on the 1960 McCarthy paper I wrote this set of Python files to try to help programmers understan...

Show HN: Bullseye2D – A Dart library for cross-platform 2D games I posted this here about a year ago, but I just pushed a 2.0 release, so I ...

Show HN: macpak (Homebrew Wrapper for macOS) https://ift.tt/zFonxNV April 12, 2026 at 08:30AM

Show HN: Minimalist template for scientific and academic resumes https://ift.tt/CzcU3jI April 12, 2026 at 04:46AM

Show HN: HyperFlow – A self-improving agent framework built on LangGraph Hi HN, I am Umer. I recently built an experimental framework called...

Show HN: Sash – tiny macOS utility to reliably cycle through app windows macOS's built-in cycle window shortcut (⌘` / ⌘@) has always bee...

Show HN: Unlegacy – document everything, from COBOL to AI generated code https://ift.tt/oM4YRQi April 10, 2026 at 05:55PM

Show HN: I built Dirac, Hash Anchored AST native coding agent, costs -64.8 pct Fully open source, a hard fork of cline. Full evals on the gi...

Show HN: 41 years sea surface temperature anomalies https://ift.tt/0XQzjfT April 9, 2026 at 01:25PM

Show HN: A (marginally) useful x86-64 ELF executable in 301 bytes https://ift.tt/p8oWDjn April 6, 2026 at 09:14PM

Show HN: LadderRank: Rank anything with ELO ratings I built a pairwise ranking platform on Cloudflare Workers. You get two items, pick the b...

Show HN: Tired of logic in useEffect, I built a class-based React state manager https://ift.tt/qiPXEtp April 8, 2026 at 10:53PM

Show HN: Android SSH client with full Terminal, server monitoring and runbooks https://ift.tt/SXxDfO7 April 8, 2026 at 11:44AM

Show HN: We built a camera only robot vacuum for less than 300$ (Well almost) https://indraneelpatil.github.io/blog/2026/robot-vacuum/ April...

Show HN: Kerf-CLI – SQLite-backed cost analytics for Claude Code https://ift.tt/KsSHtBN April 8, 2026 at 01:20AM

Show HN: Physical constants from 2 integers – MIT, 1225 tests, falsifiable https://ift.tt/ZnDVFiH April 7, 2026 at 12:52AM

Show HN: Anos – a hand-written ~100KiB microkernel for x86-64 and RISC-V I pretty much always have a kernel project going on, and have been ...

Show HN: Mdarena – Benchmark your Claude.md against your own PRs https://ift.tt/i7YFueO April 6, 2026 at 12:35AM

Show HN: Genetic algorithm engine that evolves trading strategies https://ift.tt/vYb7JV3 April 5, 2026 at 09:21PM

Show HN: Self-Host Excalidraw with Collaboration and Storage https://ift.tt/6OathG3 April 5, 2026 at 12:13AM

Show HN: Contrapunk – Real-time counterpoint harmony from guitar input, in Rust https://contrapunk.com/ April 5, 2026 at 01:40AM

Show HN: Tokencap – Token budget enforcement across your AI agents I built this after hitting the same wall repeatedly — no good way to enfo...

Show HN: AI agent skills for affiliate marketing (Markdown, works with any LLM) https://ift.tt/DdyTHB5 April 3, 2026 at 10:28PM

Show HN: DotReader – connects ideas across your books automatically https://dotreader.info April 4, 2026 at 01:46AM

Show HN: Mtproto.zig – High-performance Telegram proxy with DPI evasion Hey everyone. I built an MTProto proxy for Telegram aimed at bypassi...

Show HN: Minimal Brain Teaser Web Game (Handcrafted, No AI) Built and open-sourced in the era before AI. I’m sure you know where to find the...

Show HN: A Minimal Basic Inspired by Brainfuck https://ift.tt/qiGDRCa April 3, 2026 at 01:21AM

Show HN: SkiFlee (an HTML5 game) This is a silly little multiplayer game I made for a gamejam that involves skiiing and not crashing. Some o...

Show HN: Made a little Artemis II tracker Made a little Artemis II tracker for anyone else who is unnecessarily invested in this mission: ht...

Show HN: Linux Kernel Documentation Index-Every Page in the Linux Kernel's Docs https://ift.tt/C6hP92T April 2, 2026 at 03:39AM

Show HN: 65k AI voters predict UK local elections with 75% accuracy https://ift.tt/bouCBkP April 2, 2026 at 12:37AM

Show HN: Mkdnsite – Markdown-native web server for humans (HTML) and agents (md) # What? Introducing mkdnsite ("markdown site") - ...

Show HN: CLI to order groceries via reverse-engineered REWE API (Haskell) I just had the best time learning about the REWE (German supermark...