Repositories list

• webref

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

  cssidlweb-platform+ 1

  cssidlweb-platformdefinitions-data

  JavaScript

  •

  MIT License

  •118•419•51•4•Updated Mar 31, 2026Mar 31, 2026

• ift-client-tests

  Public
  Python

  •

  Other

  •4•2•26•0•Updated Mar 30, 2026Mar 30, 2026

• wcag

  Public
  Web Content Accessibility Guidelines

  HTML

  •

  Other

  •386•1.4k•483•94•Updated Mar 30, 2026Mar 30, 2026

• wcag-act-rules

  Public
  WCAG Conformance Test Rules

  HTML

  •

  Other

  •16•30•35•4•Updated Mar 30, 2026Mar 30, 2026

• groups

  Public
  Complement to https://www.w3.org/groups/

  JavaScript

  •

  MIT License

  •3•9•1•0•Updated Mar 30, 2026Mar 30, 2026

• specberus

  Public
  Checker used at W3C to validate the compliance of Technical Reports with publication rules

  JavaScript

  •

  MIT License

  •57•89•47•2•Updated Mar 30, 2026Mar 30, 2026

• securityig

  Public
  Security Interest Group

  Other

  •2•6•9•0•Updated Mar 30, 2026Mar 30, 2026

• did-resolution-threat-model

  Public
  HTML

  •

  Other

  •0•0•0•0•Updated Mar 30, 2026Mar 30, 2026

• data-shapes

  Public
  Data Shapes WG repo

  HTML

  •

  Other

  •44•146•203•18•Updated Mar 30, 2026Mar 30, 2026

• lws-protocol

  Public
  Linked Web Storage Protocol

  HTML

  •

  Other

  •8•24•33•11•Updated Mar 30, 2026Mar 30, 2026

• browser-specs

  Public
  A machine-readable list of Web specifications

  JavaScript

  •

  Other

  •53•305•76•3•Updated Mar 30, 2026Mar 30, 2026

• mathml-docs

  Public
  Notes and other documents by the Math WG. See also https://github.com/w3c/mathml-core (repo for the MathML Core spec) and https://github.com/w3c/mathml (repo fo…

  HTML

  •

  Other

  •9•7•8•1•Updated Mar 30, 2026Mar 30, 2026

• horizontal-issue-tracker

  Public
  Tools and pages to track horizontal issues

  MIT License

  •10•12•17•1•Updated Mar 30, 2026Mar 30, 2026

• aria

  Public
  Accessible Rich Internet Applications (WAI-ARIA)

  HTML

  •

  Other

  •144•741•445•62•Updated Mar 30, 2026Mar 30, 2026

• smartagents-workshop

  Public
  HTML

  •3•0•0•0•Updated Mar 30, 2026Mar 30, 2026

• rdf-tests

  Public
  Repository for the RDF Tests Community Group

  HTML

  •

  Other

  •27•64•39•7•Updated Mar 30, 2026Mar 30, 2026

• wcag3

  Public
  WCAG 3

  Astro

  •

  Other

  •34•135•358•10•Updated Mar 30, 2026Mar 30, 2026

• imsc

  Public
  TTML Profiles for Internet Media Subtitles and Captions (IMSC)

  HTML

  •

  Other

  •16•33•19•1•Updated Mar 30, 2026Mar 30, 2026

• activitystreams

  Public
  Activity Streams 2.0

  socialsocial-networkformat+ 5

  socialsocial-networkformatfeedspecificationactivitiesas2activitystreams

  HTML

  •

  Other

  •65•306•75•24•Updated Mar 30, 2026Mar 30, 2026

• wot

  Public
  Web of Things

  HTML

  •134•231•27•10•Updated Mar 30, 2026Mar 30, 2026

• wcag2ict

  Public
  WCAG2ICT deliverable of Accessibility Guidelines WG

  JavaScript

  •

  Other

  •8•40•62•11•Updated Mar 30, 2026Mar 30, 2026

• wai-website

  Public
  This repository hosts the W3C WAI web site.

  accessibilityw3c

  accessibilityw3c

  HTML

  •

  Other

  •1.3k•120•345•50•Updated Mar 30, 2026Mar 30, 2026

• css-validator

  Public
  W3C CSS Validation Service

  Java

  •

  Other

  •115•236•56•7•Updated Mar 30, 2026Mar 30, 2026

• strudy

  Public
  Strudy is an analysis tool for Web spec crawl reports created by Reffy

  JavaScript

  •

  MIT License

  •6•11•24•12•Updated Mar 30, 2026Mar 30, 2026

• w3c.github.io

  Public
  w3c.github.io

  HTML

  •42•147•11•2•Updated Mar 30, 2026Mar 30, 2026

• web-performance

  Public
  W3C Web Performance Working Group repo

  HTML

  •

  Other

  •73•432•10•1•Updated Mar 30, 2026Mar 30, 2026

• epub-specs

  Public
  Shared workspace for EPUB 3 specifications.

  publishingepubdigital-publishing+ 1

  publishingepubdigital-publishingepub-wg

  HTML

  •

  Other

  •65•363•61•7•Updated Mar 30, 2026Mar 30, 2026

• html-aria

  Public
  ARIA in HTML

  HTML

  •

  Other

  •49•197•51•6•Updated Mar 30, 2026Mar 30, 2026

• device-memory

  Public
  Device Memory

  Bikeshed

  •

  Other

  •18•72•1•0•Updated Mar 30, 2026Mar 30, 2026

• reffy

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

  JavaScript

  •

  MIT License

  •25•81•42•7•Updated Mar 30, 2026Mar 30, 2026