Repositories list

• csswg-drafts

  Public
  CSS Working Group Editor Drafts

  css

  css

  Bikeshed

  •

  Other

  •786786 forks•4.8k4.8k stars•4.3k4.3k issues•124124 pull requests•Updated Apr 14, 2026Apr 14, 2026

• webcodecs

  Public
  WebCodecs is a flexible web API for encoding and decoding audio and video.

  HTML

  •

  Other

  •176176 forks•1.2k1.2k stars•136136 issues•88 pull requests•Updated Apr 14, 2026Apr 14, 2026

• vcalm

  Public
  An HTTP API for performing verifiable credential lifecycle management.

  workitemw3c-ccg

  workitemw3c-ccg

  HTML

  •

  Other

  •5353 forks•133133 stars•2828 issues•33 pull requests•Updated Apr 14, 2026Apr 14, 2026

• webref

  Public
  Machine-readable references of terms defined in web browser specifications

  cssidlweb-platform+ 1

  cssidlweb-platformdefinitions-data

  JavaScript

  •

  MIT License

  •120120 forks•426426 stars•5151 issues•66 pull requests•Updated Apr 14, 2026Apr 14, 2026

• long-animation-frames

  Public
  Long Animation Frame API specification repository

  performance-metrics

  performance-metrics

  Bikeshed

  •

  Other

  •44 forks•2121 stars•2020 issues•44 pull requests•Updated Apr 14, 2026Apr 14, 2026

• wcag

  Public
  Web Content Accessibility Guidelines

  HTML

  •

  Other

  •401401 forks•1.4k1.4k stars•450450 issues•9696 pull requests•Updated Apr 14, 2026Apr 14, 2026

• ift-client-tests

  Public
  Python

  •

  Other

  •44 forks•22 stars•2525 issues•11 pull request•Updated Apr 14, 2026Apr 14, 2026

• vc-barcodes

  Public
  Securing optical barcodes using verifiable credentials.

  credentialsw3cmrz+ 2

  credentialsw3cmrzpdf417verifiable

  HTML

  •

  Other

  •55 forks•99 stars•1616 issues•33 pull requests•Updated Apr 14, 2026Apr 14, 2026

• epub-specs

  Public
  Shared workspace for EPUB 3 specifications.

  publishingepubdigital-publishing+ 1

  publishingepubdigital-publishingepub-wg

  HTML

  •

  Other

  •6565 forks•366366 stars•6262 issues•77 pull requests•Updated Apr 14, 2026Apr 14, 2026

• wot-marketing

  Public
  Web of Things (WoT) Marketing

  HTML

  •

  Other

  •1919 forks•1515 stars•2525 issues•33 pull requests•Updated Apr 14, 2026Apr 14, 2026

• rdf-star-wg

  Public
  RDF-star Working Group

  Other

  •1111 forks•3737 stars•2323 issues•44 pull requests•Updated Apr 14, 2026Apr 14, 2026

• adapt

  Public
  Semantics to describe user personalization preferences.

  JavaScript

  •

  Other

  •1717 forks•5151 stars•4040 issues•22 pull requests•Updated Apr 14, 2026Apr 14, 2026

• threat-model-web

  Public
  A Threat Model for the Web

  Bikeshed

  •

  Other

  •33 forks•33 stars•44 issues•00 pull requests•Updated Apr 14, 2026Apr 14, 2026

• cbor-ld

  Public
  A CBOR-encoding for Linked Data.

  HTML

  •

  Other

  •66 forks•1717 stars•1313 issues•33 pull requests•Updated Apr 14, 2026Apr 14, 2026

• wot-thing-description

  Public
  Web of Things (WoT) Thing Description

  HTML

  •

  Other

  •6565 forks•150150 stars•251251 issues•44 pull requests•Updated Apr 14, 2026Apr 14, 2026

• wot

  Public
  Web of Things

  HTML

  •134134 forks•231231 stars•2727 issues•66 pull requests•Updated Apr 14, 2026Apr 14, 2026

• webextensions

  Public
  Charter and administrivia for the WebExtensions Community Group (WECG)

  Bikeshed

  •

  Other

  •8080 forks•688688 stars•419419 issues•2121 pull requests•Updated Apr 14, 2026Apr 14, 2026

• i18n-drafts

  Public
  A place to edit articles, tutorials, and the like for the /International subtree of the W3C site. Also, captures issues and comments.

  i18nunicodew3c

  i18nunicodew3c

  HTML

  •7171 forks•7575 stars•116116 issues•4242 pull requests•Updated Apr 14, 2026Apr 14, 2026

• guide

  Public
  The Guidebook is the collected wisdom of the W3C Group Chairs, team contacts and other contributors.

  HTML

  •6363 forks•7272 stars•5757 issues•77 pull requests•Updated Apr 14, 2026Apr 14, 2026

• wai-evaluation-tools-list

  Public
  List of Accessibility Evaluation Tools

  accessibility

  accessibility

  JavaScript

  •1515 forks•1313 stars•1919 issues•7575 pull requests•Updated Apr 14, 2026Apr 14, 2026

• wai-website

  Public
  This repository hosts the W3C WAI web site.

  accessibilityw3c

  accessibilityw3c

  HTML

  •

  Other

  •1.3k1.3k forks•123123 stars•346346 issues•5050 pull requests•Updated Apr 14, 2026Apr 14, 2026

• media-capabilities

  Public
  Media Capabilities API

  HTML

  •

  Other

  •3232 forks•7878 stars•2626 issues•44 pull requests•Updated Apr 14, 2026Apr 14, 2026

• onboarding

  Public
  A tool to send the facility map to newcomers in a group

  JavaScript

  •

  MIT License

  •1919 forks•88 stars•11 issue•44 pull requests•Updated Apr 14, 2026Apr 14, 2026

• cg-program

  Public
  Repository to track issues and improvements with the W3C Community Groups and Business Groups program

  HTML

  •44 forks•77 stars•1313 issues•11 pull request•Updated Apr 14, 2026Apr 14, 2026

• matf

  Public
  Guidance from the Mobile Accessibility Task Force (MATF)

  androidiosaccessibility

  androidiosaccessibility

  HTML

  •

  Other

  •88 forks•3333 stars•157157 issues•22 pull requests•Updated Apr 14, 2026Apr 14, 2026

• reffy

  Public
  Reffy is a Web spec crawler and analyzer tool. It is notably used to update Webref

  JavaScript

  •

  MIT License

  •2525 forks•8181 stars•4242 issues•55 pull requests•Updated Apr 14, 2026Apr 14, 2026

• browser-specs

  Public
  A machine-readable list of Web specifications

  JavaScript

  •

  Other

  •5454 forks•306306 stars•7878 issues•55 pull requests•Updated Apr 14, 2026Apr 14, 2026

• data-shapes

  Public
  Data Shapes WG repo

  HTML

  •

  Other

  •4545 forks•146146 stars•207207 issues•1414 pull requests•Updated Apr 14, 2026Apr 14, 2026

• manifest

  Public
  Manifest for web apps

  HTML

  •

  Other

  •180180 forks•708708 stars•5959 issues•55 pull requests•Updated Apr 14, 2026Apr 14, 2026

• rdf-n-quads

  Public
  HTML

  •

  Other

  •22 forks•88 stars•33 issues•11 pull request•Updated Apr 14, 2026Apr 14, 2026