Repositories list

• binaryen

  Public
  Optimizer and compiler/toolchain library for WebAssembly

  c-plus-pluswebassemblyemscripten+ 2

  c-plus-pluswebassemblyemscriptencompilershacktoberfest

  WebAssembly

  •

  Apache License 2.0

  •885885 forks•8.6k8.6k stars•332332 issues•230230 pull requests•Updated Sep 19, 2026Sep 19, 2026

• component-model

  Public
  Repository for design and specification of the Component Model

  WebAssembly

  •

  Other

  •130130 forks•1.4k1.4k stars•132132 issues•1616 pull requests•Updated Sep 18, 2026Sep 18, 2026

• meetings

  Public
  WebAssembly meetings (VC or in-person), agendas, and notes

  meta

  meta

  HTML

  •188188 forks•548548 stars•1212 issues•22 pull requests•Updated Sep 18, 2026Sep 18, 2026

• wabt

  Public
  The WebAssembly Binary Toolkit

  webassembly

  webassembly

  C++

  •

  Apache License 2.0

  •827827 forks•8.1k8.1k stars•180180 issues•5353 pull requests•Updated Sep 18, 2026Sep 18, 2026

• testsuite

  Public
  Mirror of the spec testsuite

  WebAssembly

  •

  Apache License 2.0

  •6565 forks•249249 stars•22 issues•00 pull requests•Updated Sep 15, 2026Sep 15, 2026

• multibyte-array-access

  Public
  WebAssembly

  •

  Other

  •11 fork•44 stars•66 issues•00 pull requests•Updated Sep 14, 2026Sep 14, 2026

• website

  Public
  WebAssembly website

  CSS

  •

  Apache License 2.0

  •212212 forks•287287 stars•77 issues•11 pull request•Updated Sep 11, 2026Sep 11, 2026

• spec

  Public
  WebAssembly specification, reference interpreter, and test suite.

  specification

  specification

  WebAssembly

  •

  Other

  •539539 forks•3.5k3.5k stars•7373 issues•2323 pull requests•Updated Sep 11, 2026Sep 11, 2026

• wasi-sdk

  Public
  WASI-enabled WebAssembly C/C++ toolchain

  llvmsysrootwasi-sdk+ 1

  llvmsysrootwasi-sdkwasi-libc

  CMake

  •

  Apache License 2.0

  •237237 forks•1.6k1.6k stars•2828 issues•88 pull requests•Updated Sep 11, 2026Sep 11, 2026

• extended-name-section

  Public
  proposal

  proposal

  WebAssembly

  •

  Other

  •22 forks•1212 stars•11 issue•00 pull requests•Updated Sep 10, 2026Sep 10, 2026

• compact-import-section

  Public
  Proposal repository for compact import sections

  WebAssembly

  •

  Other

  •00 forks•66 stars•00 issues•00 pull requests•Updated Sep 8, 2026Sep 8, 2026

• WASI

  Public
  WebAssembly System Interface

  httposwebassembly+ 1

  httposwebassemblywasi

  Rust

  •

  Other

  •333333 forks•5.8k5.8k stars•242242 issues•66 pull requests•Updated Sep 8, 2026Sep 8, 2026

• custom-descriptors

  Public
  Custom RTTs and JS interop for Wasm GC structs

  WebAssembly

  •

  Other

  •33 forks•1212 stars•1919 issues•66 pull requests•Updated Sep 4, 2026Sep 4, 2026

• wasi-testsuite

  Public
  WASI Testsuite

  Rust

  •

  Apache License 2.0

  •4646 forks•8888 stars•44 issues•22 pull requests•Updated Sep 4, 2026Sep 4, 2026

• wasi-libc

  Public
  WASI libc implementation for WebAssembly

  wasi

  wasi

  C

  •

  Other

  •251251 forks•1k1k stars•5454 issues•1414 pull requests•Updated Sep 2, 2026Sep 2, 2026

• acquire-release-atomics

  Public
  WebAssembly

  •

  Other

  •11 fork•22 stars•22 issues•11 pull request•Updated Aug 26, 2026Aug 26, 2026

• tool-conventions

  Public
  Conventions supporting interoperatibility between tools working with WebAssembly.

  WebAssembly

  •

  Artistic License 2.0

  •7575 forks•372372 stars•4949 issues•88 pull requests•Updated Aug 21, 2026Aug 21, 2026

• wasi-messaging

  Public
  Messaging proposal for WASI

  wasmwitwasi

  wasmwitwasi

  1313 forks•3333 stars•77 issues•11 pull request•Updated Aug 15, 2026Aug 15, 2026

• wasi-keyvalue

  Public
  1818 forks•5454 stars•1717 issues•44 pull requests•Updated Aug 15, 2026Aug 15, 2026

• wide-arithmetic

  Public
  WebAssembly proposal for wide arithmetic

  WebAssembly

  •

  Other

  •539539 forks•1818 stars•00 issues•00 pull requests•Updated Aug 10, 2026Aug 10, 2026

• proposals

  Public
  Tracking WebAssembly proposals

  meta

  meta

  7777 forks•1.1k1.1k stars•55 issues•00 pull requests•Updated Aug 10, 2026Aug 10, 2026

• webassembly.github.io

  Public
  Redirect to webassembly.org

  HTML

  •99 forks•1313 stars•00 issues•00 pull requests•Updated Aug 6, 2026Aug 6, 2026

• threads

  Public
  Threads and Atomics in WebAssembly

  proposal

  proposal

  WebAssembly

  •

  Other

  •5454 forks•767767 stars•7474 issues•66 pull requests•Updated Jul 30, 2026Jul 30, 2026

• half-precision

  Public
  Proposal to introduce half precision operations

  WebAssembly

  •

  Other

  •00 forks•1414 stars•77 issues•00 pull requests•Updated Jul 28, 2026Jul 28, 2026

• jit-interface

  Public
  WebAssembly specification, reference interpreter, and test suite for the jit-interfaces proposal.

  WebAssembly

  •

  Other

  •539539 forks•3333 stars•66 issues•00 pull requests•Updated Jul 27, 2026Jul 27, 2026

• wasi-crypto

  Public
  WASI Cryptography API Proposal

  Makefile

  •

  Other

  •2525 forks•180180 stars•88 issues•00 pull requests•Updated Jul 27, 2026Jul 27, 2026

• custom-page-sizes

  Public
  proposal

  proposal

  WebAssembly

  •

  Other

  •66 forks•1313 stars•66 issues•00 pull requests•Updated Jul 20, 2026Jul 20, 2026

• stack-switching

  Public
  A repository for the stack switching proposal.

  proposal

  proposal

  WebAssembly

  •

  Other

  •1919 forks•216216 stars•2626 issues•88 pull requests•Updated Jul 14, 2026Jul 14, 2026

• wasi-webgpu

  Public
  proposalwasi

  proposalwasi

  Rust

  •

  Other

  •1515 forks•220220 stars•1818 issues•00 pull requests•Updated Jul 2, 2026Jul 2, 2026

• shared-everything-threads

  Public
  A draft proposal for spawning threads in WebAssembly

  WebAssembly

  •

  Other

  •66 forks•9797 stars•2525 issues•22 pull requests•Updated Jun 25, 2026Jun 25, 2026