Search

An open source design system that's fully customizable and agent ready

Leaked system prompts of ChatGPT, Claude, Gemini and more. The hidden system prompt of every popular chatbot, in full, every version since May 2025. Also Anthropic Claude Code, OpenAI Codex, Google Antigravity, xAI Grok, Meta Muse, Moonshot Kimi, Alibaba Qwen, Z.ai GLM ZCode, MiniMax, Cursor, Perplexity, DeepSeek and 30+ others. Updated daily.

Parsing gigabytes of JSON per second : used by Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, StarRocks

Omnigent is an open-source AI agent framework and meta-harness: orchestrate Claude Code, Codex, Cursor, Pi, and custom agents — swap harnesses without rewriting, enforce policies and sandboxing, and collaborate in real time from any device.

Easy to maintain open source documentation websites.

Lexical is an extensible text editor framework that provides excellent reliability, accessibility and performance.

A de-metaified Meta Glasses client.

A library that provides an embeddable, persistent key-value store for fast storage.

Rule Snippet & Rule Set for Surge / Mihomo (Clash.Meta) / Clash Premium (Dreamacro) / sing-box / Surfboard for Android / Stash

SquachWatch is a firmware for the Cheap Yellow Display that gamifies detecting things like Flock Cameras, Trackers, Meta Glasses and so much more!

An open-source C++ library developed and used at Facebook.

AI agent skills for the personal operator's craft — decisions, research, second-brain, content rotation, scenario modeling, and meta-skills to author more. Works with Claude Code, Codex, Cursor.

🔒 Free V2Ray configs auto-updated every 15m | VLESS, VMess, Trojan, Shadowsocks, Hysteria2, Reality | subscription link | bypass censorship | Compatible with v2rayNG, Hiddify, NekoRay, NekoBox, v2rayN, Clash Meta, Shadowrocket | xray-core | iran | free vpn | @Raydikalx

A JavaScript engine optimized for running React Native.

StyleX is the styling system for ambitious user interfaces.

idb is a flexible command line interface for automating iOS simulators and devices

Watches files and records, or triggers actions, when they change.

Tool for producing high quality forecasts for time series data that has multiple seasonality with linear or non-linear growth.

Build system, successor to Buck

Adds static typing to JavaScript to improve developer productivity and code quality.

A declarative framework for building efficient UIs on Android.

Meta-programming for Swift, stop writing boilerplate code.

Relay is a JavaScript framework for building data-driven React applications.

Arcade classics in true stereoscopic 3D, free on Meta Quest 3: Time Crisis, Virtua Cop and Sega Rally. Sega Rally also on Nintendo Switch, Android, Steam Deck & Linux and Mac. Videos, live numbers and leaderboards on port0r.com.

OpenEmbedded/Yocto Project BSP layer for Qualcomm based platforms

A static analyzer for Java, C, C++, and Objective-C

Used to integrate the Facebook Platform with your iOS & tvOS apps.

MSLK (Meta Superintelligence Labs Kernels) is a collection of PyTorch GPU operator libraries that are designed and optimized for GenAI training and inference, such as FP8 row-wise quantization and collective communications.

Used to integrate Android apps with Facebook Platform.

Intermediate Graphics Library (IGL) is a cross-platform library that commands the GPU. It provides a single low-level cross-platform interface on top of various graphics APIs (e.g. OpenGL, Metal and Vulkan).