Repositories list

• openzl

  Public

  facebook/openzl’s past year of commit activity
  A novel data compression framework

  C

  •

  Other

  •141141 forks•3k3k stars•3838 issues•4646 pull requests•Updated Apr 24, 2026Apr 24, 2026

• react-native

  Public

  facebook/react-native’s past year of commit activity
  A framework for building native applications using React

  reactandroidios+ 5

  reactandroidiosmobilereact-nativecross-platformapp-frameworkmobile-development

  C++

  •

  MIT License

  •25k25k forks•126k126k stars•760760 issues•531531 pull requests•Updated Apr 24, 2026Apr 24, 2026

• fboss

  Public

  facebook/fboss’s past year of commit activity
  Facebook Open Switching System Software for controlling network switches.

  C++

  •

  Other

  •385385 forks•964964 stars•2525 issues•123123 pull requests•Updated Apr 24, 2026Apr 24, 2026

• pyrefly

  Public

  facebook/pyrefly’s past year of commit activity
  A fast type checker and language server for Python

  pythonrusttypechecker+ 12

  pythonrusttypecheckertypeslanguage-serveridetypingcode-qualityhacktoberfesttypecheck+ 5

  Rust

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  MIT License

  •314314 forks•5.6k5.6k stars•436436 issues•131131 pull requests•Updated Apr 24, 2026Apr 24, 2026

• flow

  Public

  facebook/flow’s past year of commit activity
  Adds static typing to JavaScript to improve developer productivity and code quality.

  Rust

  •

  MIT License

  •1.9k1.9k forks•22k22k stars•597597 issues•1313 pull requests•Updated Apr 24, 2026Apr 24, 2026

• idb

  Public

  facebook/idb’s past year of commit activity
  idb is a flexible command line interface for automating iOS simulators and devices

  Objective-C

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  MIT License

  •485485 forks•5k5k stars•169169 issues•2626 pull requests•Updated Apr 24, 2026Apr 24, 2026

• buck2

  Public

  facebook/buck2’s past year of commit activity
  Build system, successor to Buck

  Rust

  •

  Apache License 2.0

  •342342 forks•4.3k4.3k stars•292292 issues•9393 pull requests•Updated Apr 24, 2026Apr 24, 2026

• buck2-prelude

  Public
  Prelude for the Buck2 project

  Starlark

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  Apache License 2.0

  •5959 forks•6565 stars•11 issue•11 pull request•Updated Apr 24, 2026Apr 24, 2026

• rocksdb

  Public

  facebook/rocksdb’s past year of commit activity
  A library that provides an embeddable, persistent key-value store for fast storage.

  databasestorage-engine

  databasestorage-engine

  C++

  •

  GNU General Public License v2.0

  •6.8k6.8k forks•32k32k stars•869869 issues•618618 pull requests•Updated Apr 24, 2026Apr 24, 2026

• Ax

  Public
  Adaptive Experimentation Platform

  Python

  •

  MIT License

  •366366 forks•2.7k2.7k stars•3333 issues•161161 pull requests•Updated Apr 24, 2026Apr 24, 2026

• wangle

  Public
  Wangle is a framework providing a set of common client/server abstractions for building services in a consistent, modular, and composable way.

  C++

  •

  Apache License 2.0

  •546546 forks•3.1k3.1k stars•3434 issues•1313 pull requests•Updated Apr 24, 2026Apr 24, 2026

• sapling

  Public

  facebook/sapling’s past year of commit activity
  A Scalable, User-Friendly Source Control System.

  Rust

  •

  GNU General Public License v2.0

  •363363 forks•6.8k6.8k stars•225225 issues•6666 pull requests•Updated Apr 24, 2026Apr 24, 2026

• CacheLib

  Public
  Pluggable in-process caching engine to build and scale high performance services

  performancecppcache+ 3

  performancecppcacheconcurrencyssdcache-engine

  C++

  •

  Apache License 2.0

  •319319 forks•1.5k1.5k stars•1515 issues•3333 pull requests•Updated Apr 24, 2026Apr 24, 2026

• proxygen

  Public

  facebook/proxygen’s past year of commit activity
  A collection of C++ HTTP libraries including an easy to use HTTP server.

  C++

  •

  Other

  •1.5k1.5k forks•8.3k8.3k stars•2424 issues•1212 pull requests•Updated Apr 24, 2026Apr 24, 2026

• openr

  Public
  Distributed platform for building autonomic network functions.

  C++

  •

  MIT License

  •247247 forks•932932 stars•1010 issues•1010 pull requests•Updated Apr 24, 2026Apr 24, 2026

• facebook-for-woocommerce

  Public
  The official plugin from Meta. This repository is now officially maintained by Meta's engineering team. We welcome and encourage contributions from the communit…

  PHP

  •

  GNU General Public License v2.0

  •184184 forks•253253 stars•8787 issues•141141 pull requests•Updated Apr 24, 2026Apr 24, 2026

• fbthrift

  Public
  Facebook's branch of Apache Thrift, including a new C++ server.

  C++

  •

  Apache License 2.0

  •632632 forks•2.7k2.7k stars•4545 issues•55 pull requests•Updated Apr 24, 2026Apr 24, 2026

• mvfst

  Public

  facebook/mvfst’s past year of commit activity
  An implementation of the QUIC transport protocol.

  C++

  •

  MIT License

  •285285 forks•1.6k1.6k stars•4141 issues•55 pull requests•Updated Apr 24, 2026Apr 24, 2026

• watchman

  Public

  facebook/watchman’s past year of commit activity
  Watches files and records, or triggers actions, when they change.

  C++

  •

  MIT License

  •1.1k1.1k forks•14k14k stars•213213 issues•3434 pull requests•Updated Apr 24, 2026Apr 24, 2026

• fb303

  Public

  facebook/fb303’s past year of commit activity
  fb303 is a core set of thrift functions that provide a common mechanism for querying stats and other information from a service.

  C++

  •

  Apache License 2.0

  •6464 forks•9292 stars•66 issues•1313 pull requests•Updated Apr 24, 2026Apr 24, 2026

• Lifeguard

  Public

  facebook/Lifeguard’s past year of commit activity
  Lifeguard is a static analyzer to detect Lazy Imports incompatibilities and ease the adoption overhead for Lazy Imports in Python

  pythonruststatic-analysis+ 2

  pythonruststatic-analysislazy-importspep810

  Python

  •

  MIT License

  •55 forks•4141 stars•00 issues•11 pull request•Updated Apr 24, 2026Apr 24, 2026

• lexical

  Public

  facebook/lexical’s past year of commit activity
  Lexical is an extensible text editor framework that provides excellent reliability, accessibility and performance.

  TypeScript

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  MIT License

  •2.1k2.1k forks•23k23k stars•493493 issues•1919 pull requests•Updated Apr 24, 2026Apr 24, 2026

• bpfilter

  Public

  facebook/bpfilter’s past year of commit activity
  eBPF-based packet filtering framework

  C

  •

  GNU General Public License v2.0

  •6060 forks•326326 stars•2222 issues•1010 pull requests•Updated Apr 24, 2026Apr 24, 2026

• igl

  Public

  facebook/igl’s past year of commit activity
  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

  •211211 forks•3.2k3.2k stars•22 issues•77 pull requests•Updated Apr 24, 2026Apr 24, 2026

• metro

  Public
  🚇 The JavaScript bundler for React Native

  javascriptbundlerreact-native

  javascriptbundlerreact-native

  JavaScript

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  MIT License

  •677677 forks•5.6k5.6k stars•363363 issues•7373 pull requests•Updated Apr 24, 2026Apr 24, 2026

• folly

  Public

  facebook/folly’s past year of commit activity
  An open-source C++ library developed and used at Facebook.

  C++

  •

  Apache License 2.0

  •5.9k5.9k forks•30k30k stars•333333 issues•132132 pull requests•Updated Apr 24, 2026Apr 24, 2026

• meta-haptics-sdk

  Public
  A low-level haptic rendering and data processing library based on a universal format.

  middlewaregameshaptics

  middlewaregameshaptics

  Rust

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  MIT License

  •11 fork•1212 stars•00 issues•00 pull requests•Updated Apr 24, 2026Apr 24, 2026

• lexical-ios

  Public

  facebook/lexical-ios’s past year of commit activity
  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

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  MIT License

  •6060 forks•655655 stars•2121 issues•99 pull requests•Updated Apr 24, 2026Apr 24, 2026

• hermes

  Public

  facebook/hermes’s past year of commit activity
  A JavaScript engine optimized for running React Native.

  JavaScript

  •

  MIT License

  •762762 forks•11k11k stars•129129 issues•7979 pull requests•Updated Apr 24, 2026Apr 24, 2026

• relay

  Public

  facebook/relay’s past year of commit activity
  Relay is a JavaScript framework for building data-driven React applications.

  Rust

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  MIT License

  •1.9k1.9k forks•19k19k stars•625625 issues•211211 pull requests•Updated Apr 24, 2026Apr 24, 2026