Repositories list

• relay

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

  Rust

  •

  MIT License

  •1.9k1.9k forks•19k19k stars•629629 issues•221221 pull requests•Updated Jul 8, 2026Jul 8, 2026

• dns

  Public
  Collection of Meta's DNS Libraries

  Go

  •

  Apache License 2.0

  •3232 forks•296296 stars•44 issues•33 pull requests•Updated Jul 8, 2026Jul 8, 2026

• sapling

  Public
  A Scalable, User-Friendly Source Control System.

  Rust

  •

  GNU General Public License v2.0

  •375375 forks•6.9k6.9k stars•233233 issues•9797 pull requests•Updated Jul 8, 2026Jul 8, 2026

• hhvm

  Public
  A virtual machine for executing programs written in Hack.

  phphackhhvm+ 1

  phphackhhvmhacklang

  C++

  •

  Other

  •3.1k3.1k forks•19k19k stars•410410 issues•126126 pull requests•Updated Jul 8, 2026Jul 8, 2026

• lexical

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

  TypeScript

  •

  MIT License

  •2.2k2.2k forks•24k24k stars•345345 issues•3434 pull requests•Updated Jul 8, 2026Jul 8, 2026

• fboss

  Public

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

  C++

  •

  Other

  •399399 forks•977977 stars•2525 issues•140140 pull requests•Updated Jul 8, 2026Jul 8, 2026

• buck2

  Public

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

  Rust

  •

  Apache License 2.0

  •370370 forks•4.4k4.4k stars•295295 issues•9191 pull requests•Updated Jul 8, 2026Jul 8, 2026

• astryx

  Public

  facebook/astryx’s past year of commit activity
  An open source design system that's fully customizable and agent ready

  TypeScript

  •

  MIT License

  •462462 forks•7.1k7.1k stars•147147 issues•6868 pull requests•Updated Jul 8, 2026Jul 8, 2026

• time

  Public
  Meta's Time libraries

  Go

  •

  Apache License 2.0

  •8888 forks•647647 stars•11 issue•33 pull requests•Updated Jul 8, 2026Jul 8, 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

  •6262 forks•657657 stars•2121 issues•99 pull requests•Updated Jul 8, 2026Jul 8, 2026

• facebook-for-woocommerce

  Public

  facebook/facebook-for-woocommerce’s past year of commit activity
  The official plugin from Meta. This repository is now officially owned by Meta's Partner Engineering team. We welcome and encourage contributions from the commu…

  PHP

  •

  GNU General Public License v2.0

  •190190 forks•257257 stars•9292 issues•125125 pull requests•Updated Jul 8, 2026Jul 8, 2026

• BGP

  Public
  Meta's BGP (Border Gateway Protocol) routing daemon for large-scale data center networks, built as part of the FBOSS forwarding stack.

  C++

  •

  Apache License 2.0

  •33 forks•1111 stars•00 issues•00 pull requests•Updated Jul 8, 2026Jul 8, 2026

• infer

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

  cjavaobjective-c+ 4

  cjavaobjective-ccppstatic-code-analysisstatic-analysiscode-quality

  OCaml

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  MIT License

  •2.1k2.1k forks•16k16k stars•379379 issues•22 pull requests•Updated Jul 8, 2026Jul 8, 2026

• DNE-TaaC

  Public
  TAAC (Test-As-A-Config) is a thrift-defined integration test framework for validating datacenter network products and platforms.

  Python

  •

  Apache License 2.0

  •11 fork•11 star•00 issues•11 pull request•Updated Jul 8, 2026Jul 8, 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

  •215215 forks•3.2k3.2k stars•00 issues•33 pull requests•Updated Jul 8, 2026Jul 8, 2026

• fbthrift

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

  C++

  •

  Apache License 2.0

  •638638 forks•2.7k2.7k stars•4545 issues•88 pull requests•Updated Jul 8, 2026Jul 8, 2026

• memlab

  Public
  A framework for finding JavaScript memory leaks and analyzing heap snapshots

  nodejsjavascriptperformance+ 10

  nodejsjavascriptperformancefacebookv8memorysnapshotdetectore2eheap+ 3

  TypeScript

  •

  MIT License

  •142142 forks•5k5k stars•1111 issues•22 pull requests•Updated Jul 8, 2026Jul 8, 2026

• CacheLib

  Public

  facebook/CacheLib’s past year of commit activity
  Pluggable in-process caching engine to build and scale high performance services

  performancecppcache+ 3

  performancecppcacheconcurrencyssdcache-engine

  C++

  •

  Apache License 2.0

  •320320 forks•1.6k1.6k stars•11 issue•2020 pull requests•Updated Jul 8, 2026Jul 8, 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•587587 issues•77 pull requests•Updated Jul 8, 2026Jul 8, 2026

• folly

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

  C++

  •

  Apache License 2.0

  •5.9k5.9k forks•30k30k stars•315315 issues•140140 pull requests•Updated Jul 8, 2026Jul 8, 2026

• dotslash

  Public

  facebook/dotslash’s past year of commit activity
  Simplified executable deployment

  Rust

  •

  Apache License 2.0

  •6767 forks•852852 stars•2020 issues•99 pull requests•Updated Jul 8, 2026Jul 8, 2026

• pyrefly

  Public

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

  pythonrusttypechecker+ 14

  pythonrusttypecheckertypeslanguage-serveridelanguage-server-protocoltypingvscode-extensioncode-quality+ 7

  Rust

  •

  MIT License

  •428428 forks•6.8k6.8k stars•576576 issues•181181 pull requests•Updated Jul 8, 2026Jul 8, 2026

• rebalancer

  Public
  Rebalancer is a domain-specific language and tool for specifying and solving assignment problems (eg, putting balls in boxes with complex rules).

  C++

  •

  Apache License 2.0

  •33 forks•88 stars•00 issues•44 pull requests•Updated Jul 8, 2026Jul 8, 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

  •6.9k6.9k forks•32k32k stars•892892 issues•656656 pull requests•Updated Jul 8, 2026Jul 8, 2026

• openbmc

  Public

  facebook/openbmc’s past year of commit activity
  OpenBMC is an open software framework to build a complete Linux image for a Board Management Controller (BMC).

  C

  •

  Apache License 2.0

  •306306 forks•682682 stars•4545 issues•1818 pull requests•Updated Jul 8, 2026Jul 8, 2026

• buck2-prelude

  Public
  Prelude for the Buck2 project

  Starlark

  •

  Apache License 2.0

  •6565 forks•6969 stars•11 issue•11 pull request•Updated Jul 7, 2026Jul 7, 2026

• redex

  Public
  A bytecode optimizer for Android apps

  C++

  •

  MIT License

  •678678 forks•6.3k6.3k stars•5656 issues•1515 pull requests•Updated Jul 7, 2026Jul 7, 2026

• watchman

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

  C++

  •

  MIT License

  •1.1k1.1k forks•14k14k stars•216216 issues•3434 pull requests•Updated Jul 7, 2026Jul 7, 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

  •544544 forks•3.1k3.1k stars•3434 issues•1414 pull requests•Updated Jul 7, 2026Jul 7, 2026

• fb303

  Public
  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•9494 stars•66 issues•1212 pull requests•Updated Jul 7, 2026Jul 7, 2026