Skip to content
@facebook

Meta

We are working to build community through open source technology. NB: members must have two-factor auth.

Pinned Loading

  1. docusaurus docusaurus Public

    Easy to maintain open source documentation websites.

    TypeScript 66.2k 10k

  2. hhvm hhvm Public

    A virtual machine for executing programs written in Hack.

    C++ 18.7k 3.1k

  3. zstd zstd Public

    Zstandard - Fast real-time compression algorithm

    C 27.8k 2.6k

  4. lexical lexical Public

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

    TypeScript 23.8k 2.2k

Repositories

Showing 10 of 177 repositories
  • astryx Public

    An open source design system that's fully customizable and agent ready

    facebook/astryx's past year of commit activity
    TypeScript 12,932 MIT 1,115 215 (2 issues need help) 203 Updated Sep 13, 2026
  • folly Public

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

    facebook/folly's past year of commit activity
    C++ 30,536 Apache-2.0 5,879 325 151 Updated Sep 13, 2026
  • fboss Public

    Facebook Open Switching System Software for controlling network switches.

    facebook/fboss's past year of commit activity
    C++ 990 408 25 177 Updated Sep 14, 2026
  • buck2 Public

    Build system, successor to Buck

    facebook/buck2's past year of commit activity
    Rust 4,424 Apache-2.0 394 297 96 Updated Sep 13, 2026
  • relay Public

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

    facebook/relay's past year of commit activity
    Rust 18,962 MIT 1,897 636 (11 issues need help) 225 Updated Sep 13, 2026
  • pyrefly Public

    A fast type checker and language server for Python

    facebook/pyrefly's past year of commit activity
    Rust 6,963 MIT 513 546 (39 issues need help) 177 Updated Sep 13, 2026
  • hhvm Public

    A virtual machine for executing programs written in Hack.

    facebook/hhvm's past year of commit activity
    C++ 18,659 3,070 410 136 Updated Sep 13, 2026
  • sapling Public

    A Scalable, User-Friendly Source Control System.

    facebook/sapling's past year of commit activity
    Rust 7,008 GPL-2.0 396 240 (4 issues need help) 135 Updated Sep 13, 2026
  • flow Public

    Adds static typing to JavaScript to improve developer productivity and code quality.

    facebook/flow's past year of commit activity
    Rust 22,286 MIT 1,893 512 (1 issue needs help) 6 Updated Sep 13, 2026
  • ocamlrep Public

    Sets 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/ocamlrep's past year of commit activity
    Rust 147 MIT 28 0 6 Updated Sep 13, 2026
View all repositories
Developer Program Member