The Tor Project, Inc2006
ThoughtWorks1993
Tibco Software1997
Unisys1987
United States Department of Defense1949
Univel1991
University of Arizona1885
University of California1868
University of California, Berkeley1868
University of California, Los Angeles1919
University of California, San Diego1960
University of Michigan1817
University of Washington1861
University of Wisconsin–Madison1848UTS Globalbusiness
Valve Corporation1996Visual Solutions, Inc.1989
VMware1998
Wang Laboratories1951
Wind River Systems1981
Wolfram Research1987
World Wide Web Consortium1994WSO22005
Xerox1906
Xinuos2009