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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Q3Edit – Edit and play Quake 3 maps in the browser
Show HN A browser-based editor to create, edit, and play Quake 3 Arena maps online.
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IKEA Complexity Index
Show HN Ranks IKEA furniture by assembly complexity based on steps and parts count.
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A zoomable timeline of 4M Wikipedia events
Show HN Explore 4 million Wikipedia events on an interactive, zoomable timeline.
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Watch bots interact with an SSH honeypot in real time
Show HN Live stream of automated bots probing a real SSH honeypot server.
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Simulator for a custom 8-bit discreet logic computer
Show HN Web-based simulator for a handbuilt 8-bit computer using discrete logic gates.
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Libretto PR agents – Automatically fix failing playwright scripts
Show HN AI agents that auto-detect and fix broken Playwright test scripts in your PRs.
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Clx – Compile Lua to Native Executables Through C++20
Show HN A tool that compiles Lua scripts into standalone native executables via C++20.
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Mojibake – A low-level Unicode library written in C
Show HN A lightweight C library for low-level Unicode text processing and encoding.
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BambooGrid – Open-source web UI for power grid modeling and power flow
Show HN Open-source browser-based tool for modeling and simulating electrical power grids.
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Leaves – A text-UI disk usage treemap visualizer
Show HN Visualize disk usage as an interactive treemap directly in your terminal UI.
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Be the ChatBOT
Show HN Role-play as an AI chatbot to understand how conversational AI works.
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Galois connections for composable numeric casts in Rust
Show HN A Rust library enabling safe, composable numeric type conversions via Galois connections.
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QBasic Gorillas (Repeeled)
Show HN A modern remake of the classic QBasic Gorillas banana-throwing game.
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I've built a words game based on binary search
Show HN Guess the secret word using binary search logic in this word game.
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E-- – A language you dial between English and Python
Show HN A hybrid language that lets you write code anywhere between plain English and Python syntax.
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Firefox in WebAssembly
Show HN Run a full Firefox browser instance entirely inside WebAssembly in your browser.
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One More Letter
Show HN A word puzzle game where you build words by adding one letter at a time.
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Painterly – Turn pictures into digital paintings without generative AI
Show HN Convert photos into stylized digital paintings using rule-based algorithms, no AI.
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misa77 - a codec that decodes 2x faster than LZ4 (at better ratios)
Show HN A lossless compression codec offering 2x faster decoding than LZ4 with better compression ratios.
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Low-latency local LLM runner via OpenJDK Panama FFM (Java 22)
Show HN Run local LLMs with low latency using Java 22's Panama FFM API for native memory access.
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Capn-hook for coding agents – don't grep the same mystery twice
Show HN A hook tool that helps coding agents remember and reuse past grep results.
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18KB ls alternative in no_std rust and Libc
Show HN A lightweight 18KB ls replacement written in no_std Rust for minimal overhead.
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Make senders work to get into your inbox
Show HN Block email spam by requiring senders to solve a CAPTCHA first.
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For 10 World Cups, my model's 2 favorites had the champion every time
Show HN A predictive model that correctly placed the World Cup winner in its top 2 picks across 10 consecutive tournaments.
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StyleSeed – a design-rules engine so AI agents stop building generic UI
Show HN Enforce custom design rules on AI-generated UIs to ensure brand consistency.
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Web App Uses RTL-SDR to Align HDTV Antenna
Show HN Browser-based tool using RTL-SDR hardware to optimize HDTV antenna direction.
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Opening lines of famous literary works
Show HN Explore and discover memorable first sentences from classic literary masterpieces.
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Juggler – an open-source GUI coding agent, by the creator of JUCE
Show HN Open-source AI coding agent with a GUI, built by the founder of JUCE framework.
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I RL-trained an agent that trains models with RL (for ~$1.3k)
Show HN An RL-trained agent that autonomously runs RL training experiments on AI models.
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Beautiful Type Erasure with C++26 Reflection
Show HN Implement elegant type erasure in C++ using the new C++26 reflection features.
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Self-hosted voice AI agent for Asterisk/FreePBX
Show HN Open-source AI voice agent integrating LLMs with Asterisk PBX phone systems.
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Oodle.ai – $10 per million agent traces
Show HN Affordable observability platform for AI agents at $10 per million traces.
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Rejourney – Open-source revenue leak prediction for web and mobile apps
Show HN Detect and predict where your app loses revenue with open-source analytics.
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Hackney – Compare Uber, Lyft, Waymo, and Robotaxi Prices
Show HN Compare real-time ride prices across Uber, Lyft, Waymo, and robotaxi services.
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Sx 2.0 – Share AI skills with your team through a Dropbox folder
Show HN Turn a Dropbox folder into a shared AI skill server for your whole team.
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I implemented a neural network in SQL
Show HN A neural network built entirely in SQL, demonstrated by training on MNIST dataset.
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YouTube Guitar Tab Parser
Show HN Extracts and parses guitar tabs from YouTube video descriptions automatically.
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Jacquard, a programming language for AI-written, human-reviewed code
Show HN A language designed so AI writes code that humans can easily audit and verify.
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FixBugs – Reproduce production bugs and verify fixes
Show HN AI-powered tool to reproduce production bugs and validate fixes automatically.
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Nobie – an Excel-compatible runtime for agents and humans
Show HN Run Excel formulas in apps and AI agents without needing Excel installed.
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Sigwire – a live TUI switchboard for every signal on your Linux box
Show HN Monitor and send Linux signals to any process via an interactive terminal UI.
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BillAI Bass, an AI-Powered Big Mouth Billy Bass Using Strands Agents
Show HN A talking fish toy powered by AI agents that responds to voice queries.
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DOM-docx – HTML to native, editable Word docs (MIT)
Show HN Convert HTML content into fully editable, native Word (.docx) documents.
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OpenClawMachines – Extending OpenClaw to the Enterprise
Show HN Enterprise-grade extension of OpenClaw for scalable claw machine management.
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Clawk – Give coding agents a disposable Linux VM, not your laptop
Show HN Spins up isolated Linux VMs for AI coding agents to run safely.
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Codebase Posters – turn any Git repo into generative poster art
Show HN Visualize Git repositories as unique, algorithmically generated poster artwork.
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Kurvengefahr – browser CAD/CAM for pen plotters
Show HN Design and generate toolpaths for pen plotters directly in your browser.
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Zen Mode – a global focus mode for macOS
Show HN A macOS app that dims all windows except the active one to boost focus.
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Shirei, cross-platform GUI framework in native Go
Show HN Build cross-platform desktop GUIs using pure native Go with no CGo.
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Mindwalk – Replay coding-agent sessions on a 3D map of your codebase
Show HN Visualize and replay AI coding-agent sessions navigating your codebase in 3D.
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Nectar, a Rust-like React that compiles to WebAssembly
Show HN Build reactive UIs with Rust-inspired syntax that compiles directly to WebAssembly.
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Adaptive Recall, persistent memory for AI assistants over MCP
Show HN Gives AI assistants long-term memory that persists across sessions using MCP.
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Ant – A JavaScript runtime and ecosystem
Show HN A new JavaScript runtime and ecosystem designed for modern development workflows.
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Learn by rebuilding Redis, Git, a database from scratch
Show HN Hands-on coding challenges that teach internals by rebuilding real tools.
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Sqlsure – deterministic semantic checks for AI-generated SQL
Show HN Validates AI-generated SQL with rule-based semantic checks to catch errors reliably.
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Orbit – AR satellite tracker, watch 15k+ objects
Show HN Track 15,000+ satellites in real-time using augmented reality on your device.
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Reame – a CPU inference server that gets faster as it runs
Show HN A self-optimizing CPU inference server that speeds up LLM inference over time.
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Earth Game – An offline CLI for turning life goals into quests
Show HN A command-line tool that gamifies your life by converting goals into RPG-style quests.
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SubjectiveZero, an open-source agentic node editor for creative coding
Show HN Open-source node editor with AI agents for visual, creative coding workflows.
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Wyrm – Solve algebra by touch, built on an open-source soundness engine
Show HN A touch-based algebra solver powered by an open-source mathematical soundness engine.
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Reviving my 2001 college band with AI
Show HN A musician uses AI tools to resurrect and finish old college band recordings.
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Runloom – Go-style coroutines for Python free-threaded
Show HN Brings Go-like goroutines and channels to Python's free-threaded mode.
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Getting GLM 5.2 running on my slow computer
Show HN Colibri: a lightweight client to run GLM 5.2 locally on low-spec machines.
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18 Words
Show HN A minimalist writing tool that limits your thoughts to just 18 words.
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Rubiks Cube Solver
Show HN Online tool that generates step-by-step solutions for your Rubik's Cube.
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I built a web tool to see and edit what an AI thinks before it answers
Show HN Inspect and modify an AI's reasoning chain in real time before it responds.
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RandoFont – A browser for Google Fonts
Show HN Discover and browse Google Fonts randomly to find your perfect typeface.
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I mapped 8.5M research papers into an interactive atlas
Show HN Explore 8.5 million research papers as a navigable visual map of science.
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Analog Watch
Show HN A minimal analog clock app that brings classic watch faces to your screen.
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Abralo – Free, easy way to run several Claude Code agents in one window
Show HN Run multiple Claude Code agents simultaneously in a single unified window.
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Devthropology – Better Insights for GitHub Repos
Show HN Analyze GitHub repositories to uncover team patterns and dev trends.
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Yamanote.fun – A complete soundscape for Tokyo's Yamanote line
Show HN Explore every station jingle and ambient sound from Tokyo's Yamanote Line.
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FableCut – A browser video editor AI agents can drive (zero deps)
Show HN Zero-dependency browser video editor built for AI agent automation workflows.
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LastShelf – an emergency map of your family's documents bills& contacts
Show HN Organizes your family's vital documents, bills, and contacts for emergencies.
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Microsoft releases Flint, a visualization language for AI agents
Show HN Flint is a declarative chart language by Microsoft designed for AI agent data visualization.
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Frugon – Find which LLM calls a cheaper model could handle (local, MIT)
Show HN Identifies LLM API calls that could be routed to cheaper models, saving costs.
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Onboard-CLI, a LLM powered and AST-based tool to visualize codebase
Show HN CLI tool that maps codebases into visual graphs using LLMs and AST parsing.
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Hnwork.app – UI for Who is hiring posts
Show HN A cleaner interface to browse Hacker News 'Who is Hiring' job posts.
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Follow London Trains in 3D
Show HN Real-time 3D visualization of London train movements across all lines.
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Agent Draw: An agent draws while you talk, built on TLDraw
Show HN AI agent that creates diagrams and drawings in real-time as you speak.
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Kastor – Terraform-style specs for AI agents
Show HN Define and manage AI agent behaviors using declarative Terraform-like configuration files.
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Davit, a Apple Containers UI
Show HN A graphical interface for managing Apple's native container technology on Mac.
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Rowboat – Open-source, local-first alternative to Claude Desktop
Show HN A local-first, open-source AI desktop app as an alternative to Claude Desktop.
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Chiptune Radio
Show HN A web radio station streaming retro chiptune music 24/7 for free.
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Neil the Seal Game
Show HN A fun browser game featuring Neil the Seal as the main character.
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Free Mermaid Diagram Editor
Show HN A free browser-based editor to create and preview Mermaid diagrams instantly.
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Docx-CLI: agents read/edit Word docs using 1/2 the time and tokens
Show HN CLI tool letting AI agents read and edit Word documents with 50% less time and tokens.
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Halo – open-source, tamper-evident runtime evidence for AI agents
Show HN Records and cryptographically seals AI agent runtime logs to prevent tampering.
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PostgreSQL performance and cost across 23 EC2 instance types
Show HN Compare PostgreSQL benchmarks and pricing across 23 AWS EC2 instance types.
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Fast, native Mac file manager (filters, fuzzy find, 9 MB, no Electron)
Show HN A lightweight 9 MB native Mac file manager with filters and fuzzy search.
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InstantVideos.org – short documentaries in ~30 seconds
Show HN Watch bite-sized 30-second documentaries on fascinating real-world topics.
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LLM Thought Visualization
Show HN Visualizes the hidden reasoning and thought process of LLM responses in real time.
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Pulpie – Models for Cleaning the Web
Show HN Pareto-optimal ML models designed to extract and clean web content efficiently.
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I Built LangGraph for Swift
Show HN A Swift framework for building multi-agent AI workflows inspired by LangGraph.
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Scan your AI agents for dangerous capabilities
Show HN Open-source tool that detects and audits risky capabilities in AI agents.
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Homegames. An open-source game platform I've been making for 8 years
Show HN A self-hosted, open-source gaming platform built and refined over eight years.
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Osint tool that finds exposed files on domains
Show HN Scan domains to discover publicly exposed files using OSINT techniques.
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KiCad in the Browser
Show HN Run KiCad PCB design software directly in your web browser, no install needed.
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Classify mechanical faults using Contrastive Language-Audio Pretraining
Show HN Diagnose car faults by matching audio recordings to text labels via CLAP.
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A statically typed, cross-platform, easily bootstrappable build system
Show HN BUSY: a build system with static typing that runs anywhere with minimal setup.
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Mcpsnoop – Wireshark for MCP (transparent proxy and live TUI)
Show HN Intercept and inspect MCP traffic in real-time via a transparent proxy with live TUI.
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CLI that helps AI agents avoid vulnerable dependencies
Show HN A CLI tool that scans and blocks vulnerable dependencies for AI coding agents.
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I made a tool that prevents websites from tracking you
Show HN A browser tool that blocks websites from tracking your online activity.
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Gitstock–Transform you GitHub commit history into K-line and animations
Show HN Visualize your GitHub commits as stock-style K-line charts and animated graphs.
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Inkwell – An RSS reader for e-ink devices
Show HN A minimal RSS reader app designed specifically for e-ink display devices.
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Pieces – Social network for people
Show HN A social network designed to foster genuine human connections and community.
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I measured the half-life of 41,301 Show HN launches. It's 7 hours
Show HN Analysis of 41k Show HN posts reveals traffic drops by half within 7 hours.
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Bramble – Local-first password manager
Show HN A local-first password manager that stores your credentials securely on-device.
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ctx – Search the coding agent history already on your machine
Show HN CLI tool to search and browse local AI coding agent conversation histories.
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CLI tool for detecting non-exact code duplication with embedding models
Show HN Find semantically similar code blocks using AI embeddings via a simple CLI.
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A graph paper generator that renders vector PDFs in the browser
Show HN Generate customizable graph paper and download crisp vector PDFs instantly in-browser.
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I built an open-source alternative to Claude Cowork
Show HN Valmis is an open-source collaborative AI workspace inspired by Claude Cowork.
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Cyclearchive.com – search vintage cycling magazines
Show HN Search and browse a digital archive of classic cycling magazines from the past.
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Mail Memories – A desktop app to rescue photos from Gmail
Show HN Extract and save all your photos from Gmail attachments to your desktop.
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Claudoro, Pomodoro timer embedded in the Claude Code statusline
Show HN A Pomodoro timer that integrates directly into the Claude Code status bar.
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ZeroFS – A log-structured filesystem for S3
Show HN Mount S3 as a log-structured filesystem with POSIX-compatible access.
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zkGolf, competitive optimization of formally verified circuits.
Show HN A competitive platform for optimizing and formally verifying zero-knowledge circuits.
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Searchable directory of 22k+ products from worker-owned co-ops
Show HN Browse and search 22,000+ products made by worker-owned cooperatives worldwide.
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Z-Jail – A 130 KB Linux sandbox-C99 with 7 defense layers and zero deps
Show HN Lightweight Linux sandbox using 7 security layers, written in C99 with no deps.
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Salt – a systems language with Z3 theorem proving in the compiler
Show HN Systems programming language integrating Z3 automated theorem proving directly into the compiler for formal verification.
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QR code renderer in a TrueType font
Show HN Generate QR codes by typing characters in a custom TrueType font file.
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Pglayers – PostgreSQL extensions as stackable Docker layers
Show HN Build modular PostgreSQL Docker images by stacking extensions as reusable layers for simplified configuration.
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PMB – local memory for coding agents that shows if it is used
Show HN Persistent memory system for AI coding agents that tracks and visualizes memory usage patterns.
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GolemUI – The new paradigm for JavaScript forms
Show HN A modern JavaScript form library that simplifies building complex, reactive forms with minimal code.
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HackerNows – Native iOS HN Client
Show HN A native iOS app for browsing Hacker News with fast performance and intuitive navigation.
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NanoEuler – GPT-2 scale model in pure C/CUDA from scratch
Show HN Minimal GPT-2 implementation built entirely in C and CUDA without ML frameworks, enabling efficient inference and training.
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Decomp Academy – Learn to decompile GameCube games into matching C
Show HN Interactive learning platform teaching reverse engineering techniques to decompile GameCube games back into C source code.
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My 13-year-old built an ant colony tracker
Show HN A web app to monitor and track ant colony behavior, growth, and activity in real-time with interactive visualization.
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I made a heatmap of 3400 VCs who are open to cold emails
Show HN Interactive heatmap visualizing 3400 venture capitalists who are receptive to unsolicited outreach from founders.
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DRM-Free Books
Show HN A platform connecting authors and readers who value unrestricted, DRM-free digital books without corporate restrictions.
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Zanagrams
Show HN Word puzzle game where you rearrange letters to form anagrams and climb a competitive leaderboard.
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Bash4LLM+ – A lightweight, dependency-free Bash wrapper for LLM APIs
Show HN Lightweight Bash wrapper enabling direct LLM API integration without external dependencies or complex setup.
Jul 2026 TOP 10
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18 Words
Show HN A minimalist writing tool that limits your thoughts to just 18 words.
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Getting GLM 5.2 running on my slow computer
Show HN Colibri: a lightweight client to run GLM 5.2 locally on low-spec machines.
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Zanagrams
Show HN Word puzzle game where you rearrange letters to form anagrams and climb a competitive leaderboard.
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Searchable directory of 22k+ products from worker-owned co-ops
Show HN Browse and search 22,000+ products made by worker-owned cooperatives worldwide.
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Davit, a Apple Containers UI
Show HN A graphical interface for managing Apple's native container technology on Mac.
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Microsoft releases Flint, a visualization language for AI agents
Show HN Flint is a declarative chart language by Microsoft designed for AI agent data visualization.
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Ant – A JavaScript runtime and ecosystem
Show HN A new JavaScript runtime and ecosystem designed for modern development workflows.
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Juggler – an open-source GUI coding agent, by the creator of JUCE
Show HN Open-source AI coding agent with a GUI, built by the founder of JUCE framework.
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Firefox in WebAssembly
Show HN Run a full Firefox browser instance entirely inside WebAssembly in your browser.
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Yamanote.fun – A complete soundscape for Tokyo's Yamanote line
Show HN Explore every station jingle and ambient sound from Tokyo's Yamanote Line.