Repositories list

• yaml-ld

  Public
  CG specification for YAML-LD and UCR

  yamljsonlinked-data+ 2

  yamljsonlinked-datardfw3c

  HTML

  •

  Other

  •88 forks•3636 stars•2323 issues•44 pull requests•Updated Jun 26, 2026Jun 26, 2026

• webref

  Public

  w3c/webref’s past year of commit activity
  Machine-readable references of terms defined in web browser specifications

  cssidlweb-platform+ 1

  cssidlweb-platformdefinitions-data

  JavaScript

  •

  MIT License

  •127127 forks•445445 stars•5252 issues•88 pull requests•Updated Jun 26, 2026Jun 26, 2026

• lws-protocol

  Public
  Linked Web Storage Protocol

  HTML

  •

  Other

  •1212 forks•2626 stars•4848 issues•99 pull requests•Updated Jun 26, 2026Jun 26, 2026

• wai-arrm

  Public
  Accessibility Roles and Responsibilities Mapping (ARRM)

  Ruby

  •2222 forks•1414 stars•1515 issues•11 pull request•Updated Jun 26, 2026Jun 26, 2026

• browser-specs

  Public
  A machine-readable list of Web specifications

  JavaScript

  •

  Other

  •5454 forks•323323 stars•7979 issues•00 pull requests•Updated Jun 26, 2026Jun 26, 2026

• wcag

  Public
  Web Content Accessibility Guidelines

  HTML

  •

  Other

  •461461 forks•1.4k1.4k stars•428428 issues•8989 pull requests•Updated Jun 26, 2026Jun 26, 2026

• csswg-wiki

  Public
  CSS Working Group Wiki – community-editable documentation

  csswikiw3c+ 1

  csswikiw3cw3css

  Markdown

  •2222 forks•77 stars•00 issues•22 pull requests•Updated Jun 26, 2026Jun 26, 2026

• sustainableweb-ig

  Public
  W3C Sustainable Web Interest Group

  sustainability

  sustainability

  Other

  •55 forks•3333 stars•1010 issues•00 pull requests•Updated Jun 26, 2026Jun 26, 2026

• encrypted-media

  Public
  Encrypted Media Extensions

  HTML

  •

  Other

  •9090 forks•196196 stars•4141 issues•1313 pull requests•Updated Jun 26, 2026Jun 26, 2026

• sustainableweb-wsg

  Public
  Web Sustainability Guidelines (WSG)

  sustainabilityguidelines

  sustainabilityguidelines

  HTML

  •

  Other

  •1313 forks•4343 stars•125125 issues•7070 pull requests•Updated Jun 26, 2026Jun 26, 2026

• wcag3

  Public
  WCAG 3

  Astro

  •

  Other

  •4141 forks•155155 stars•387387 issues•2929 pull requests•Updated Jun 26, 2026Jun 26, 2026

• epub-specs

  Public
  Shared workspace for EPUB 3 specifications.

  publishingepubdigital-publishing+ 1

  publishingepubdigital-publishingepub-wg

  HTML

  •

  Other

  •6767 forks•381381 stars•5959 issues•66 pull requests•Updated Jun 26, 2026Jun 26, 2026

• vc-wg

  Public
  Working home repository of the W3C Verifiable Credentials WG

  vcvc-wg

  vcvc-wg

  HTML

  •

  Other

  •00 forks•44 stars•11 issue•00 pull requests•Updated Jun 26, 2026Jun 26, 2026

• wot-marketing

  Public
  Web of Things (WoT) Marketing

  TypeScript

  •

  Other

  •2020 forks•1616 stars•3838 issues•11 pull request•Updated Jun 26, 2026Jun 26, 2026

• dapt

  Public
  Dubbing and Audio description Profiles of TTML2

  HTML

  •

  Other

  •77 forks•1111 stars•3737 issues•00 pull requests•Updated Jun 26, 2026Jun 26, 2026

• wcag-act-rules

  Public
  WCAG Conformance Test Rules

  HTML

  •

  Other

  •1717 forks•3131 stars•3636 issues•11 pull request•Updated Jun 26, 2026Jun 26, 2026

• dx-prof

  Public
  The Profiles Vocabulary

  HTML

  •

  Other

  •33 forks•77 stars•5454 issues•11 pull request•Updated Jun 26, 2026Jun 26, 2026

• wot-binding-templates

  Public

  w3c/wot-binding-templates’s past year of commit activity
  Web of Things (WoT) Binding Templates

  HTML

  •

  Other

  •2525 forks•2929 stars•9999 issues•44 pull requests•Updated Jun 26, 2026Jun 26, 2026

• css-validator

  Public
  W3C CSS Validation Service

  Java

  •

  Other

  •121121 forks•239239 stars•4141 issues•88 pull requests•Updated Jun 26, 2026Jun 26, 2026

• spec-dashboard

  Public
  Tools to monitor development of specs across groups

  JavaScript

  •1313 forks•3131 stars•77 issues•00 pull requests•Updated Jun 26, 2026Jun 26, 2026

• spec-generator

  Public

  w3c/spec-generator’s past year of commit activity
  Service to automatically generate specs from various source formats

  TypeScript

  •

  MIT License

  •2222 forks•4545 stars•66 issues•22 pull requests•Updated Jun 26, 2026Jun 26, 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

  •7272 forks•7878 stars•119119 issues•3939 pull requests•Updated Jun 26, 2026Jun 26, 2026

• ash-nazg

  Public
  One interface to find all group contributors and in IPR bind them

  repository-management

  repository-management

  JavaScript

  •

  MIT License

  •3434 forks•3030 stars•4747 issues•44 pull requests•Updated Jun 26, 2026Jun 26, 2026

• sparql-query

  Public

  w3c/sparql-query’s past year of commit activity
  HTML

  •

  Other

  •44 forks•1919 stars•9595 issues•55 pull requests•Updated Jun 26, 2026Jun 26, 2026

• aria

  Public
  Accessible Rich Internet Applications (WAI-ARIA)

  HTML

  •

  Other

  •150150 forks•746746 stars•421421 issues•6363 pull requests•Updated Jun 26, 2026Jun 26, 2026

• cg-monitor

  Public
  Dashboard of activity from Community Groups

  JavaScript

  •2424 forks•2020 stars•55 issues•44 pull requests•Updated Jun 26, 2026Jun 26, 2026

• data-shapes

  Public

  w3c/data-shapes’s past year of commit activity
  Data Shapes WG repo

  HTML

  •

  Other

  •4444 forks•155155 stars•228228 issues•1616 pull requests•Updated Jun 26, 2026Jun 26, 2026

• validate-repos

  Public
  Test whether W3C spec repos match a set of best practices

  JavaScript

  •

  Other

  •1515 forks•2121 stars•1616 issues•1212 pull requests•Updated Jun 26, 2026Jun 26, 2026

• activitystreams

  Public

  w3c/activitystreams’s past year of commit activity
  Activity Streams 2.0

  socialsocial-networkformat+ 5

  socialsocial-networkformatfeedspecificationactivitiesas2activitystreams

  HTML

  •

  Other

  •6868 forks•309309 stars•172172 issues•3030 pull requests•Updated Jun 25, 2026Jun 25, 2026

• AB-public

  Public
  Advisory Board repository for materials not meant to be restricted to W3C Members

  HTML

  •2626 forks•3434 stars•4040 issues•22 pull requests•Updated Jun 25, 2026Jun 25, 2026