Show HN ranking for the past day

  1. Free, in-browser PDF editor | 41
  2. We built a multi-agent research hub. The waitlist is a reverse-CAPTCHA | 16
  3. PeriodicTableOfElements.org | 13
  4. I built an OS that is pure AI | 9
  5. A prompt that builds the most capable AI agent system | 5
  6. Windows 95–style Weather App for iPhone | 4
  7. GitHub Copilot Technical Writing Skill | 1
  8. a Rust CLI to automatically swap monitor focus based on your gaze | 2
  9. EnterpriseFizzBuzz – 622K lines of production-grade FizzBuzz | 3
  10. Free.ai | 2
  11. Nanopm – PM automation for Claude Code (audit → strategy → roadmap) | 1
  12. Shoofly – pre-execution security for Claude Code Cowork and OpenClaw | 0
  13. Layer – Hide your personal AI files from Git without touching gitignore | 1
  14. A shared emergency number for families | 1
  15. Immutable – Audit logs with SHA-256 | 0
  16. Anamnesis – Open-source 4D strategic memory engine for AI agents | 0
  17. testing Ansible playbooks *fast* | 0
  18. Web game, an AI decides if you would survive in a survival situation | 5
  19. Ariel gives LLMs direct control over live robots | 0
  20. I turned my TV into a '90s Weather Channel with an Android kiosk app | 0
  21. Git bayesect – Bayesian Git bisection for non-deterministic bugs | 3
  22. How to get 100 customers building in public | 0
  23. Octopus, Open-source alternative to CodeRabbit and Greptile | 0
  24. StarFlicks – A free movie tracker built with Django, Next.js and Expo | 1
  25. Opnsense-filterlog, a TUI for analysing OPNsense firewall logs | 0
  26. An agent that detects YouTube brainrot and turns off my kid's TV | 0
  27. A minimal terminal time tracker with AI analysis | 2
  28. What if a diagnostic engine thought like House? | 1
  29. Canary – Monitor any URL for changes, get AI-powered intelligence | 2
  30. Go Style Agent Skill – Opinionated Skill for Writing Golang | 0
  31. Shellwright – Playwright for CLIs – Helps Claude with Interactive CLIs | 0
  32. Share2ChatGPT Widgets / Buttons | 1
  33. Converter for legacy Paint Shop Pro files (.psp and .pspimage) to SVG | 1
  34. Web-based setup tool for Django Cookiecutter | 0
  35. A neuromorphic engine as a stock trader | 0
  36. VellaVeto — blocks unsafe MCP tool calls by default | 1
  37. UBPE – a universal BPE tokenizer, optimized and rethought | 0
  38. Show HN_Mnemosyne: A 10^38 Joule Thermodynamic Barrier for Post-Quantum Edge AI | 0
  39. Grimoire – A lightweight, open-source WoW addon manager | 0
  40. ACP – An open protocol for agents to operate live UIs natively | 1
  41. I optimized a Java log scanner from 872ms to 78ms (Zero GC) | 0
  42. Telegram Bridges for Gemini CLI and Codex | 4
  43. OpenChat – Syncing conversations across AI providers | 0
  44. 2MB FOSS Nav App with GPX Tracking | 0
  45. Epismo CLI – Make human-AI workflows reusable, like GitHub did for code | 0
  46. JSONPath Benchmark in Java (SJF4J vs. Jayway) | 1
  47. I built a log management system which helps me take action | 0
  48. Drag-to-Reveal Before/After Slider Component for React/Next.js | 2
  49. Vyasa – A client-side AI writing detector (WASM, no API calls) | 0
  50. NoEyes – Terminal chat where the server is architecturally blind | 0
  51. Code typing game to increase your typing speed in 10 languages | 0
  52. Glazyr Viz – Zero-Copy MCP Vision Server via POSIX Shared Memory | 0
  53. Spectator a cross platform DSL for cybersecurity | 0
  54. WordGen a Robust Wordlist Maker | 0
  55. An Economic OS with a 16,200x Stability Floor (100M Monte Carlo runs) | 0
  56. Phantom – Let AI use your API keys without leaking them | 0
  57. AgentVerse – Open social network for AI agents (Mar 2026) | 0
  58. Gamekeeper – Discord bot for on-demand Hetzner dedicated game servers | 0
  59. CMPSBL Software Factory — Free Daily Drop $2.9M | 1
  60. Python Dispatching Without Limitations | 0
  61. Tracetics – Funnel analytics for developers via REST API | 0
  62. I built a tool that checks if your council tax band is wrong | 0
  63. Home Maker: Declare Your Dev Tools in a Makefile | 0
  64. Loreline, narrative language transpiled via Haxe: C++/C#/JS/Java/Py/Lua | 1
  65. MyClawn – Agent-to-agent networking platform | 1
  66. Newspaper-style HN reader (PWA) with articles and comments side by side | 0
  67. AI Cost Firewall – OpenAI-compatible gateway with semantic caching | 1
  68. Live, interactive architecture diagrams for open-source projects | 0
  69. Cursorlag – add a lag trail to your cursor | 1
  70. Substrate UI, my "teaching myself front end development" design system | 0
  71. Local-first dictation for macOS – Parakeet TDT, zero cloud calls | 0
  72. Why I built another GitHub star tracker | 0