W3C XML Schema 1.1 test suite
TTML2 Tests
W3C DID Test Suite and Implementation Report
Web of Things (WoT) Thing Description
Decentralized Identifier Ecosystem Extensions
Test repository for the Publishing@W3C activity
A mechanism to use JSON Schemas with Verifiable Credentials
Tests for XPath and XQuery
Repository for the maintenance of the schema.org accessibility property values for discoverability.
Sustainable Web Design Community Group
Interoperability Test Suite for Data Integrity Ecdsa Signatures.
Interoperability Test Suite for Data Integrity BBS Signatures
Internationalization tests run with the W3C i18n test suite.