X.Org may refer to:
- X.Org Server, the reference implementation of X developed by the Foundation
- X.Org Foundation, a community-based foundation which took over X stewardship in 2004
- X.Org, the organisation in charge of X standards from 1999, as part of The Open Group
- X Window System, a windowing system for bitmap displays, common on UNIX-like computer operating systems
disambiguation page lists articles associated with the title X.Org.
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