reactThe library for web and native user interfaces.
react-nativeA framework for building native applications using React
create-react-appSet up a modern web app by running one command.
docusaurusEasy to maintain open source documentation websites.
rocksdbA library that provides an embeddable, persistent key-value store for fast storage.
follyAn open-source C++ library developed and used at Facebook.
zstdZstandard - Fast real-time compression algorithm
hhvmA virtual machine for executing programs written in Hack.
frescoAn Android library for managing images and the memory they use.
yogaYoga is a cross-platform layout engine which implements Flexbox. Follow https://twitter.com/yogalayout for updates.
lexicalLexical is an extensible text editor framework that provides excellent reliability, accessibility and performance.
prophetTool for producing high quality forecasts for time series data that has multiple seasonality with linear or non-linear growth.
inferA static analyzer for Java, C, C++, and Objective-C
flipperA desktop debugging platform for mobile developers.
watchmanWatches files and records, or triggers actions, when they change.
react-devtoolsAn extension that allows inspection of React component hierarchy in the Chrome and Firefox Developer Tools.
chiselChisel is a collection of LLDB commands to assist debugging iOS apps.
buckA fast build system that encourages the creation of small, reusable modules over a variety of platforms and languages.
proxygenA collection of C++ HTTP libraries including an easy to use HTTP server.
facebook-ios-sdkUsed to integrate the Facebook Platform with your iOS & tvOS apps.
lithoA declarative framework for building efficient UIs on Android.
pyre-checkPerformant type-checking for python.
facebook-android-sdkUsed to integrate Android apps with Facebook Platform.
redexA bytecode optimizer for Android apps
componentkitA React-inspired view framework for iOS.
saplingA Scalable, User-Friendly Source Control System.
fishhookA library that enables dynamically rebinding symbols in Mach-O binaries running on iOS.
PathPickerPathPicker accepts a wide range of input -- output from git commands, grep results, searches -- pretty much anything. After parsing the input, PathPicker presents you with a nice UI to select which files you're interested in. After that you can open them in your favorite editor or execute arbitrary commands.
prop-typesRuntime type checking for React props and similar objects
idbidb is a flexible command line interface for automating iOS simulators and devices
HaxlA Haskell library that simplifies access to remote data, such as databases or web-based services.
FBRetainCycleDetectoriOS library to help detecting retain cycles in runtime.
ducklingLanguage, engine, and tooling for expressing, testing, and evaluating composable language rules on input strings.
mcrouterMcrouter is a memcached protocol router for scaling memcached deployments.
buck2Build system, successor to Buck
wangleWangle is a framework providing a set of common client/server abstractions for building services in a consistent, modular, and composable way.
wdtWarp speed Data Transfer (WDT) is an embeddedable library (and command line tool) aiming to transfer data between 2 systems as fast as possible over multiple TCP paths.
iglIntermediate 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).
fbthriftFacebook's branch of Apache Thrift, including a new C++ server.
mysql-5.6Facebook's branch of the Oracle MySQL v5.6 database. This includes MyRocks.
AxAdaptive Experimentation Platform
jsxThe JSX specification is a XML-like syntax extension to ECMAScript.
fbjsA collection of utility libraries used by other Meta JS projects.
react-native-websiteThe React Native website and docs
screenshot-tests-for-androidGenerate fast deterministic screenshots during Android instrumentation tests
TextLayoutBuilderAn Android library that allows you to build text layouts more easily.
SoLoaderNative code loader for Android
facebook-python-business-sdkPython SDK for Meta Marketing APIs
ThreatExchangeTrust & Safety tools for working together to fight digital harms.
mariana-trenchA security focused static analysis tool for Android and Java applications.
fatalFatal is a library for fast prototyping software in modern C++. It provides facilities to enhance the expressive power of C++. The library is heavily based on template meta-programming, while keeping the complexity under-the-hood.
transform360Transform360 is an equirectangular to cubemap transform for 360 video.
CacheLibPluggable in-process caching engine to build and scale high performance services
openrDistributed platform for building autonomic network functions.
fbossFacebook Open Switching System Software for controlling network switches.
facebook-php-business-sdkPHP SDK for Meta Marketing API
ktfmtA program that reformats Kotlin source code to comply with the common community standard for Kotlin code conventions.
winterfellA STARK prover and verifier for arbitrary computations
pyre2Python wrapper for RE2
openbmcOpenBMC is an open software framework to build a complete Linux image for a Board Management Controller (BMC).
SPARTASPARTA is a library of software components specially designed for building high-performance static analyzers based on the theory of Abstract Interpretation.
chef-cookbooksOpen source chef cookbooks.
IT-CPEMeta's Client Platform Engineering tools. Some of the tools we have written to help manage our fleet of client systems.
timeMeta's Time libraries
facebook-sdk-for-unityThe facebook sdk for unity.
lexical-iosLexical 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.
facebook-nodejs-business-sdkFacebook Ads API using Node.js
FAI-PEPFacebook AI Performance Evaluation Platform
RapidThe OpenStreetMap editor driven by open data, AI, and supercharged features
facebook-java-business-sdkJava SDK for Meta Marketing APIs
chef-utilsUtilities related to Chef
opaque-keAn implementation of the OPAQUE password-authenticated key exchange protocol
dnsCollection of Meta's DNS Libraries
facebook360_depFacebook360 Depth Estimation Pipeline - https://facebook.github.io/facebook360_dep
akdAn implementation of an auditable key directory
tac_plusA Tacacs+ Daemon tested on Linux (CentOS) to run AAA via TACACS+ Protocol via IPv4 and IPv6.
facebook-ruby-business-sdkRuby SDK for Meta Marketing API
pcicrawlerpcicrawler is a Python based command line interface tool which can be used to display, filter and export information about PCI (Peripheral Component Interconnect) or PCIe buses and devices, as well as PCI topology.
usortSafe, minimal import sorting for Python projects.
grocery-deliveryThe Grocery Delivery utility for managing cookbook uploads to distributed Chef backends.
taste-testerSoftware to manage a chef-zero instance and use it to test changes on production servers.
TestSlideA Python test framework
homebrew-fbOS X Homebrew formulas to install Meta open source software
sappPost Processor for Facebook Static Analysis Tools.
squangleSQuangLe is a C++ API for accessing MySQL servers
malware-detectionSharing indicators and methods for malware and malicious activity detection and prevention to help keep the Internet safe
ocamlrepSets of libraries and tools to write applications and libraries mixing OCaml and Rust. These libraries will help keeping your types and data structures synchronized, and enable seamless exchange between OCaml and Rust
facebook-business-sdk-codegenCodegen project for our business SDKs
fb303fb303 is a core set of thrift functions that provide a common mechanism for querying stats and other information from a service.
bpfilterBPF-based packet filtering framework