Show HN
"Show HN" is where developers showcase their own products and projects on HackerNews. We pick the top-scoring launches every day.
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I reverse-engineered the world maps of Test Drive III (1990 DOS game)
Show HN Reverse engineering project that extracted and visualized the world maps from the classic 1990 DOS racing game Test Drive III
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DropLock – E2EE secret sharing web app with no backend
Show HN Share secrets securely with end-to-end encryption using a serverless web app.
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Paseo – Beautiful open-source coding agent interface
Show HN An elegant open-source interface for AI coding agents with beautiful design and user-friendly interaction.
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Edsger – A handwritten Clojure REPL for the reMarkable 2
Show HN A handwriting-based Clojure REPL that runs on reMarkable 2 e-ink tablets for coding
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Live breath detection and biofeedback from a phone microphone
Show HN Real-time breathing pattern analysis using smartphone microphone for wellness apps.
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RePlaya – self-hosted browser session replay with live tailing
Show HN Self-hosted tool for recording and replaying browser sessions with real-time monitoring capabilities.
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Eyeball
Show HN A visual debugging tool that helps developers inspect and analyze code execution flow in real-time.
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Build Your Own AI Agent CLI in 150 Lines
Show HN A tutorial showing how to create a functional AI agent command-line tool in just 150 lines of code.
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DepsGuard – One command to harden NPM/pnpm/yarn/bun/uv configs
Show HN Security tool that hardens package manager configurations with a single command across multiple platforms.
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A free Linux adaptation of NETworkManager by BornToBeRoot
Show HN Linux port of the popular Windows network management tool for system administrators
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Textile – A desktop app for weaving together bits of text
Show HN Desktop app that helps you connect and organize fragments of text into cohesive documents
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A CSS 3D Engine (no WebGL)
Show HN A 3D rendering engine that creates interactive 3D graphics using only CSS transforms, no WebGL required.
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Streambed – Stream Postgres to Iceberg on S3, Supports Postgres Wire
Show HN Real-time data streaming tool that converts PostgreSQL data to Apache Iceberg format on S3 storage with wire protocol support
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Atomic Editor – Obsidian-style live preview for CodeMirror 6
Show HN A CodeMirror 6 extension that brings Obsidian's live markdown preview to any editor.
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Breathe CLI – Paced resonance breathing in the macOS terminal
Show HN A command-line tool that guides you through paced breathing exercises directly in your terminal.
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500 years of Joseon court omens as an observability dashboard
Show HN A unique dashboard that visualizes 500 years of historical Korean court omens as modern observability metrics.
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Helios – what plug-in solar could generate for any address in Britain
Show HN Calculate potential solar energy generation from plug-in solar panels for any UK address
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Open Envelope – an open schema for defining AI agent teams
Show HN An open standard schema for structuring and organizing AI agent teams and workflows
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Komi-learn – continuous memory and self-improvement for coding agents
Show HN A framework that enables AI coding agents to learn and improve continuously through persistent memory and self-reflection mechanisms.
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Tiny-vLLM – high performance LLM inference engine in C++ and CUDA
Show HN A lightweight, high-performance LLM inference engine built with C++ and CUDA for efficient model serving.
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Open-source private home security camera system (end-to-end encryption)
Show HN Self-hosted security camera system with end-to-end encryption for privacy-focused home monitoring
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TV Explorer. Adding advanced UI to free online TV
Show HN Enhanced interface for discovering and watching free online TV channels with advanced navigation features.
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Zot – Yet another coding agent harness
Show HN A harness framework for building and managing AI coding agents with streamlined workflows.
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Ktx – Open-source executable context layer for data agents
Show HN An open-source framework that provides executable context management for AI data agents and automation workflows.
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Continue? Y/N: A 60-second game about AI agent permission fatigue
Show HN A quick browser game that simulates the exhausting experience of constantly granting permissions to AI agents.
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Hallucinate – Massively Multiplayer Online Rave
Show HN A virtual rave experience where thousands of people dance together online in real-time.
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I built an Android OS in the browser
Show HN A web-based Android emulator that runs a full Android OS directly in your browser
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Open-Source AI Racing Harness
Show HN Open-source simulation harness for training and testing AI racing algorithms in realistic environments.
Jun 2026 TOP 10
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Hallucinate – Massively Multiplayer Online Rave
Show HN A virtual rave experience where thousands of people dance together online in real-time.
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Continue? Y/N: A 60-second game about AI agent permission fatigue
Show HN A quick browser game that simulates the exhausting experience of constantly granting permissions to AI agents.
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Eyeball
Show HN A visual debugging tool that helps developers inspect and analyze code execution flow in real-time.
-
Edsger – A handwritten Clojure REPL for the reMarkable 2
Show HN A handwriting-based Clojure REPL that runs on reMarkable 2 e-ink tablets for coding
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Tiny-vLLM – high performance LLM inference engine in C++ and CUDA
Show HN A lightweight, high-performance LLM inference engine built with C++ and CUDA for efficient model serving.
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TV Explorer. Adding advanced UI to free online TV
Show HN Enhanced interface for discovering and watching free online TV channels with advanced navigation features.
-
I reverse-engineered the world maps of Test Drive III (1990 DOS game)
Show HN Reverse engineering project that extracted and visualized the world maps from the classic 1990 DOS racing game Test Drive III
-
500 years of Joseon court omens as an observability dashboard
Show HN A unique dashboard that visualizes 500 years of historical Korean court omens as modern observability metrics.
-
Open-source private home security camera system (end-to-end encryption)
Show HN Self-hosted security camera system with end-to-end encryption for privacy-focused home monitoring
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Breathe CLI – Paced resonance breathing in the macOS terminal
Show HN A command-line tool that guides you through paced breathing exercises directly in your terminal.