XSDHub standard schema snapshots, 2 November 2026
Maven POM 4.0.0: Apache Software Foundation, Apache-2.0. Original copyright/header retained. Source: https://maven.apache.org/xsd/maven-4.0.0.xsd . See APACHE-2.0.txt and MAVEN-NOTICE.txt.
Sitemap 0.9 protocol/schema: Google, Yahoo and Microsoft. Source: https://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd . Protocol specification licensed CC BY-SA 2.5 per https://www.sitemaps.org/terms.html . Unmodified schema snapshot; attribution/share-alike preserved. Full licence: https://creativecommons.org/licenses/by-sa/2.5/legalcode.en
Original teaching XML examples: XSDHub. No guarantee of receiver acceptance or indexing.