Master programming by recreating your favorite technologies from scratch.

Linux kernel source tree

A feature-rich command-line audio/video downloader

LLM inference in C/C++

Implement a ChatGPT-like LLM in PyTorch from scratch, step by step

Animation engine for explanatory math videos

A latent text-to-image diffusion model

AI agents running research on single-GPU nanochat training automatically

uBlock Origin - An efficient blocker for Chromium and Firefox. Fast and lean.

Truly independent web browser

Unsloth Studio is a web UI for training and running open models like Qwen3.5, Gemma 4, DeepSeek, gpt-oss locally.

The best ChatGPT that $100 can buy.

The Big List of Naughty Strings is a list of strings which have a high probability of causing issues when used as user-input data.

Portable file server with accelerated resumable uploads, dedup, WebDAV, SFTP, FTP, TFTP, zeroconf, media indexer, thumbnails++ all in one file

Extracted system prompts from ChatGPT (GPT-5.4, GPT-5.3, Codex), Claude (Opus 4.6, Sonnet 4.6, Claude Code), Gemini (3.1 Pro, 3 Flash, CLI), Grok (4.2, 4), Perplexity, and more. Updated regularly.

🎥 Command line media player

Vane is an AI-powered answering engine.

stb single-file public domain libraries for C/C++

The Serenity Operating System 🐞

A simple and easy-to-use library to enjoy videogames programming

The original sources of MS-DOS 1.25, 2.0, and 4.0 for reference purposes

Powerful yet simple to use screenshot software 🖥️ 📸

LLM training in simple, raw C/CUDA

🤗 smolagents: a barebones library for agents that think in code.

Google Chromium, sans integration with Google

Fully open reproduction of DeepSeek-R1

Distribute and run LLMs with a single file.

A brief computer graphics / rendering course

Fast and memory-efficient exact attention

gpt-oss-120b and gpt-oss-20b are two open-weight language models by OpenAI