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    169 repositories

    • pyrefly

      Public
      A fast type checker and language server for Python
      pythonrusttypechecker
      pythonrusttypecheckertypeslanguage-serveridetypingcode-qualityhacktoberfesttypecheck
      Rust
      •
      MIT License
      •314•5.6k•430•127•Updated Apr 23, 2026Apr 23, 2026

    • stylex

      Public
      StyleX is the styling system for ambitious user interfaces.
      JavaScript
      •
      MIT License
      •409•9.1k•104•52•Updated Apr 23, 2026Apr 23, 2026

    • lexical

      Public
      Lexical is an extensible text editor framework that provides excellent reliability, accessibility and performance.
      TypeScript
      •
      MIT License
      •2.1k•23k•505•21•Updated Apr 23, 2026Apr 23, 2026

    • CacheLib

      Public
      Pluggable in-process caching engine to build and scale high performance services
      performancecppcache
      performancecppcacheconcurrencyssdcache-engine
      C++
      •
      Apache License 2.0
      •319•1.5k•15•33•Updated Apr 23, 2026Apr 23, 2026

    • metro

      Public
      🚇 The JavaScript bundler for React Native
      javascriptbundlerreact-native
      javascriptbundlerreact-native
      JavaScript
      •
      MIT License
      •677•5.6k•364•74•Updated Apr 23, 2026Apr 23, 2026

    • ocamlrep

      Public
      Sets of libraries and tools to write applications and libraries mixing OCaml and Rust. These libraries will help keeping your types and data structures synchron…
      Rust
      •
      MIT License
      •25•141•0•6•Updated Apr 23, 2026Apr 23, 2026

    • buck2

      Public
      Build system, successor to Buck
      Rust
      •
      Apache License 2.0
      •341•4.3k•292•93•Updated Apr 23, 2026Apr 23, 2026

    • sapling

      Public
      A Scalable, User-Friendly Source Control System.
      Rust
      •
      GNU General Public License v2.0
      •364•6.8k•226•65•Updated Apr 23, 2026Apr 23, 2026

    • buck2-shims-meta

      Public
      Shims to convert Meta internal buck2 macros/targets for open source build compatibility.
      Starlark
      •
      Apache License 2.0
      •7•5•0•1•Updated Apr 23, 2026Apr 23, 2026

    • react-native

      Public
      A framework for building native applications using React
      reactandroidios
      reactandroidiosmobilereact-nativecross-platformapp-frameworkmobile-development
      C++
      •
      MIT License
      •25k•126k•759•522•Updated Apr 23, 2026Apr 23, 2026

    • fbthrift

      Public
      Facebook's branch of Apache Thrift, including a new C++ server.
      C++
      •
      Apache License 2.0
      •632•2.7k•45•5•Updated Apr 23, 2026Apr 23, 2026

    • starlark-rust

      Public
      A Rust implementation of the Starlark language
      Rust
      •
      Apache License 2.0
      •90•962•31•24•Updated Apr 23, 2026Apr 23, 2026

    • pyre-check

      Public
      Performant type-checking for python.
      pythonsecuritytypechecker
      pythonsecuritytypecheckerstatic-analysisocamlcontrol-flow-analysiscode-qualityprogram-analysistaint-analysisabstract-interpretation
      OCaml
      •
      MIT License
      •449•7.2k•132•30•Updated Apr 23, 2026Apr 23, 2026

    • buck2-prelude

      Public
      Prelude for the Buck2 project
      Starlark
      •
      Apache License 2.0
      •59•65•1•1•Updated Apr 23, 2026Apr 23, 2026

    • flow

      Public
      Adds static typing to JavaScript to improve developer productivity and code quality.
      Rust
      •
      MIT License
      •1.9k•22k•597•11•Updated Apr 23, 2026Apr 23, 2026

    • igl

      Public
      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…
      C++
      •
      Other
      •211•3.2k•3•9•Updated Apr 23, 2026Apr 23, 2026

    • lexical-ios

      Public
      Lexical iOS is an extensible text editor framework that integrates the APIs and philosophies from Lexical Web with a Swift API built on top of TextKit.
      Swift
      •
      MIT License
      •60•655•21•9•Updated Apr 23, 2026Apr 23, 2026

    • fboss

      Public
      Facebook Open Switching System Software for controlling network switches.
      C++
      •
      Other
      •385•964•25•118•Updated Apr 23, 2026Apr 23, 2026

    • IT-CPE

      Public
      Meta's Client Platform Engineering tools. Some of the tools we have written to help manage our fleet of client systems.
      Ruby
      •
      Apache License 2.0
      •116•571•6•12•Updated Apr 23, 2026Apr 23, 2026

    • immersive-web-sdk

      Public
      WebXR made simple. Full-featured framework with interactions, locomotion, and spatial UI. Powered by Three.js.
      TypeScript
      •
      MIT License
      •75•401•17•7•Updated Apr 23, 2026Apr 23, 2026

    • redex

      Public
      A bytecode optimizer for Android apps
      C++
      •
      MIT License
      •681•6.3k•56•17•Updated Apr 23, 2026Apr 23, 2026

    • rocksdb

      Public
      A library that provides an embeddable, persistent key-value store for fast storage.
      databasestorage-engine
      databasestorage-engine
      C++
      •
      GNU General Public License v2.0
      •6.8k•32k•868•616•Updated Apr 23, 2026Apr 23, 2026

    • proxygen

      Public
      A collection of C++ HTTP libraries including an easy to use HTTP server.
      C++
      •
      Other
      •1.5k•8.3k•24•12•Updated Apr 23, 2026Apr 23, 2026

    • hermes

      Public
      A JavaScript engine optimized for running React Native.
      JavaScript
      •
      MIT License
      •762•11k•129•79•Updated Apr 23, 2026Apr 23, 2026

    • bunnylol.rs

      Public
      bunnylol is a tool for writing smart bookmarks. Use in your browser, or on the command-line
      rustbrowserbookmarks
      rustbrowserbookmarksbunnylol
      Rust
      •
      MIT License
      •28•127•2•1•Updated Apr 23, 2026Apr 23, 2026

    • folly

      Public
      An open-source C++ library developed and used at Facebook.
      C++
      •
      Apache License 2.0
      •5.9k•30k•333•132•Updated Apr 23, 2026Apr 23, 2026

    • squangle

      Public
      SQuangLe is a C++ API for accessing MySQL servers
      C++
      •
      Other
      •54•127•2•0•Updated Apr 23, 2026Apr 23, 2026

    • OpenBIC

      Public
      BICs (Bridge IC) are standalone devices deployed within a Data Center that enable monitoring a multi-host system using a single BMC device.
      C
      •
      Apache License 2.0
      •55•65•5•4•Updated Apr 23, 2026Apr 23, 2026

    • relay

      Public
      Relay is a JavaScript framework for building data-driven React applications.
      Rust
      •
      MIT License
      •1.9k•19k•626•212•Updated Apr 23, 2026Apr 23, 2026

    • react-native-website

      Public
      The React Native website and docs
      reactreact-nativedocusaurus
      reactreact-nativedocusaurus
      MDX
      •
      MIT License
      •6k•2.1k•9•98•Updated Apr 22, 2026Apr 22, 2026
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