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  1. react react Public

    The library for web and native user interfaces.

    JavaScript 243k 50.5k

  2. react-native react-native Public

    A framework for building native applications using React

    C++ 125k 25.1k

  3. docusaurus docusaurus Public

    Easy to maintain open source documentation websites.

    TypeScript 63.7k 9.7k

  4. hhvm hhvm Public

    A virtual machine for executing programs written in Hack.

    C++ 18.6k 3.1k

  5. zstd zstd Public

    Zstandard - Fast real-time compression algorithm

    C 26.5k 2.4k

  6. lexical lexical Public

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

    TypeScript 22.9k 2.1k

Repositories

Showing 10 of 161 repositories
  • hhvm Public

    A virtual machine for executing programs written in Hack.

    facebook/hhvm’s past year of commit activity
    C++ 18,603 3,077 409 114 Updated Feb 3, 2026
  • folly Public

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

    facebook/folly’s past year of commit activity
    C++ 30,246 Apache-2.0 5,846 313 133 Updated Feb 3, 2026
  • hermes Public

    A JavaScript engine optimized for running React Native.

    facebook/hermes’s past year of commit activity
    JavaScript 10,778 MIT 732 119 58 Updated Feb 3, 2026
  • proxygen Public

    A collection of C++ HTTP libraries including an easy to use HTTP server.

    facebook/proxygen’s past year of commit activity
    C++ 8,326 1,524 22 15 Updated Feb 3, 2026
  • pyrefly Public

    A fast type checker and language server for Python

    facebook/pyrefly’s past year of commit activity
    Rust 5,278 MIT 263 373 (27 issues need help) 59 Updated Feb 3, 2026
  • buck2 Public

    Build system, successor to Buck

    facebook/buck2’s past year of commit activity
    Rust 4,241 Apache-2.0 324 274 67 Updated Feb 3, 2026
  • buck2-prelude Public

    Prelude for the Buck2 project

    facebook/buck2-prelude’s past year of commit activity
    Starlark 60 Apache-2.0 60 1 1 Updated Feb 3, 2026
  • ThreatExchange Public

    Trust & Safety tools for working together to fight digital harms.

    facebook/ThreatExchange’s past year of commit activity
    C++ 1,316 346 56 (10 issues need help) 4 Updated Feb 3, 2026
  • pyre-check Public

    Performant type-checking for python.

    facebook/pyre-check’s past year of commit activity
    OCaml 7,144 MIT 451 131 21 Updated Feb 3, 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.

    facebook/wangle’s past year of commit activity
    C++ 3,094 Apache-2.0 546 34 12 Updated Feb 3, 2026
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