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• react-native

  A framework for building native apps with React.
  JavaScript 21,104 97,035 1,551 (25 issues need help) 378 Updated Aug 4, 2021

• jest

  Delightful JavaScript Testing.

  javascript testing facebook snapshot expectation easy painless-javascript-testing
  TypeScript MIT 5,237 36,004 1,409 (114 issues need help) 191 Updated Aug 4, 2021

• redex

  A bytecode optimizer for Android apps
  C++ MIT 583 5,387 45 (2 issues need help) 7 Updated Aug 3, 2021

• react

  A declarative, efficient, and flexible JavaScript library for building user interfaces.

  react javascript library ui frontend declarative
  JavaScript MIT 34,637 172,344 592 (9 issues need help) 201 Updated Aug 4, 2021

• openr

  Distributed platform for building autonomic network functions.
  C++ 225 788 3 0 Updated Aug 4, 2021

• fboss

  Facebook Open Switching System Software for controlling network switches.
  C++ 237 717 14 14 Updated Aug 4, 2021

• watchman

  Watches files and records, or triggers actions, when they change.
  C++ Apache-2.0 820 10,205 116 16 Updated Aug 3, 2021

• fb303

  fb303 is a core set of thrift functions that provide a common mechanism for querying stats and other information from a service.
  C++ Apache-2.0 18 30 3 0 Updated Aug 3, 2021

• fbzmq

  Facebook ZeroMQ wrappers.
  Python 80 280 2 1 Updated Aug 4, 2021

• bistro

  Bistro is a flexible distributed scheduler, a high-performance framework supporting multiple paradigms while retaining ease of configuration, management, and monitoring.
  C++ MIT 135 979 2 5 Updated Aug 3, 2021

• fbthrift

  Facebook's branch of Apache Thrift, including a new C++ server.
  C++ Apache-2.0 533 2,176 37 1 Updated Aug 3, 2021

• jscodeshift

  A JavaScript codemod toolkit.
  JavaScript MIT 388 6,606 103 22 Updated Aug 3, 2021

• rocksdb

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

  database storage-engine
  C++ 4,581 20,425 391 231 Updated Aug 3, 2021

• hhvm

  A virtual machine for executing programs written in Hack.

  php hack hhvm hacklang
  C++ 2,956 17,023 585 47 Updated Aug 3, 2021

• pyre-check

  Performant type-checking for python.

  python security typechecker static-analysis ocaml control-flow-analysis code-quality
  OCaml MIT 346 5,492 59 14 Updated Aug 3, 2021

• facebook-ios-sdk

  Used to integrate the Facebook Platform with your iOS & tvOS apps.
  Objective-C 2,871 6,827 79 14 Updated Aug 3, 2021

• ThreatExchange

  Share threat information with vetted partners
  C++ 226 844 25 (1 issue needs help) 6 Updated Aug 3, 2021

• infer

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

  c java objective-c cpp static-code-analysis static-analysis code-quality
  OCaml MIT 1,696 12,465 305 (13 issues need help) 5 Updated Aug 3, 2021

• proxygen

  A collection of C++ HTTP libraries including an easy to use HTTP server.
  C++ 1,357 7,192 24 10 Updated Aug 3, 2021

• fbjs

  A collection of utility libraries used by other Facebook JS projects.
  JavaScript MIT 301 1,797 43 29 Updated Aug 3, 2021

• fbt

  A JavaScript Internationalization Framework

  javascript i18n framework internationalization
  JavaScript MIT 152 3,598 21 5 Updated Aug 3, 2021

• docusaurus

  Easy to maintain open source documentation websites.

  react javascript open-source website documentation hacktoberfest
  TypeScript 3,305 25,627 155 (14 issues need help) 35 Updated Aug 3, 2021

• prepack

  A JavaScript bundle optimizer.

  javascript optimization
  JavaScript 481 14,332 192 (70 issues need help) 35 Updated Aug 3, 2021

• flow

  Adds static typing to JavaScript to improve developer productivity and code quality.
  OCaml MIT 1,821 21,308 2,407 (16 issues need help) 121 Updated Aug 3, 2021

• create-react-app

  Set up a modern web app by running one command.

  react zero-configuration build-tools
  JavaScript MIT 22,488 89,422 938 (5 issues need help) 263 Updated Aug 3, 2021

• Ax

  Adaptive Experimentation Platform
  Jupyter Notebook MIT 166 1,567 16 22 Updated Aug 3, 2021

• openbmc

  OpenBMC is an open software framework to build a complete Linux image for a Board Management Controller (BMC).
  C 241 524 36 6 Updated Aug 3, 2021

• sapp

  Post Processor for Facebook Static Analysis Tools.
  Python MIT 8 16 0 8 Updated Aug 3, 2021

• facebook-android-sdk

  Used to integrate Android apps with Facebook Platform.
  Kotlin 3,514 5,420 64 21 Updated Aug 4, 2021

• buck

  A fast build system that encourages the creation of small, reusable modules over a variety of platforms and languages.

  android python java ios buck build-tool
  Java Apache-2.0 1,176 7,989 181 12 Updated Aug 3, 2021