Software

Workflow Management Coalition (WfMC)
11/11/2015

Develops and promotes workflow management standards

World Wide Web Consortium (W3C)
11/11/2015

Develops common protocols to enable the evolution and interoperability of the Web.

X.org
1/01/2019

Maintains the X Windows system, a Unix-based interface.

XFree86 Project, Inc.
11/11/2015

Promoted XFree86, an open source X11-based desktop infrastructure *Dissolved in 2003

Xiph.Org Foundation
11/11/2015

Develops and promotes open source, multimedia related projects.