Best Show HN projects on GitHub

Bird frame for Raspberry Pi or your homelab - real-time bird detection by audio, fully local AI, rendered as real, hand-cut 1800s bird illustrations. On an e-ink panel, a TV, or any screen.

🌐 The Internet Computer! Free, Open-Source, and Self-Hostable.

Bitmap & tilemap generation from a single example with the help of ideas from quantum mechanics

Android application powering the mirror in my house

Instant is the best backend for AI-coded apps. You get auth, permissions, storage, presence, and streams — everything you need to ship apps your users will love.

An OpenGL RTS game engine written in C

Pythonic AI generation of images and videos

Run any GUI app in the terminal❗

Animation of the SHA-256 hash function in your terminal.

private member portal for churches, built with Ruby on Rails

Open-source State-of-the-art TTS model which runs on a CPU 😻

A hierarchical inference engine for frontier MoE models: hot experts on the GPU (CUDA, Vulkan), warm ones in RAM, cold ones streamed from NVMe. Written in C, runs on the hardware you already own.

Pocket Flow: Codebase to Tutorial

Gemma 4 26B-A4B inference in ~2 GB of RAM on any M-series MacBook

A ~9M parameter LLM that talks like a small fish.

Reproducing images with geometric primitives.

Structured Outputs

🏋 Modern open-source fitness coaching platform. Create workout plans, track progress, and access a comprehensive exercise database.

:memo: Today I Learned

Text compression for generating keyboard expansions

Cactus Needle has moved to cactus-compute/cactus.

Record terminal sessions as SVG animations

🌱 Private, quiet space for thinking. Simple app for .md files.

Pure Javascript OCR for more than 100 Languages 📖🎉🖥

Push docker images directly to remote servers without an external registry

Resolve production issues, fast. An open source observability platform unifying session replays, logs, metrics, traces and errors powered by ClickHouse and OpenTelemetry.

Shadow any website for offline viewing, with the JavaScript stripped out

PyGWalker: Turn your dataframe into an interactive UI for visual analysis

QR designer web app with a novel method of designing qr codes that does not take advantage of error correction

Quake 1 game port to Apple Watch

Automagically reverse-engineer REST APIs via capturing traffic

A Python framework for self-hosted LLM tool-calling and multi-step agentic workflows

Locally run an Instruction-Tuned Chat-Style LLM

Beautiful, open source, WebGPU-based charting library

LLocalSearch is a completely locally running search aggregator using LLM Agents. The user can ask a question and the system will use a chain of LLMs to find the answer. The user can see the progress of the agents and the final answer. No OpenAI or Google API keys are needed.

min(DALL·E) is a fast, minimal port of DALL·E Mini to PyTorch

Docker implemented in around 100 lines of bash

Lunar lander type game with computational fluid dynamics

An improved drop-in replacement for SQS

A TTS model capable of generating ultra-realistic dialogue in one pass.

📡 Native App over HTTP, on iOS

⬛️ GUI/CLI tool and library for saving complete web pages as a single HTML file

Self-hosted AI coding assistant

Build performant, native and cross-platform desktop applications with native Svelte + powerful CSS-like styling.🚀

Preimage attack against NeuralHash 💣

Chrome extension which blocks requests to sites which have used legal threats to remove themselves from other blacklists.

%%30%30 Game: Don't touch the trees! (Thanks, Chrome dev team!)

A lightweight text editor written in Lua