Unix International
The AT&T and Sun counter-consortium of the Unix wars, formed in 1988 to defend System V Release 4 and OPEN LOOK against OSF, and dissolved in 1994 when nobody could afford to keep fighting.
When Apollo, DEC, HP and IBM formed the Open Software Foundation in May 1988, in response to AT&T and Sun merging their Unix variants, the two companies needed a club of their own. Unix International was announced in December that year, headquartered in Parsippany, New Jersey, and gathered among others AT&T, Sun, Unisys, NCR, Data General, Fujitsu, Motorola and Intel. Its job was to make SVR4 look like something other than a two-company affair: members would give AT&T's Unix System Laboratories "guidance" on what went into System V. For the desktop it chose OPEN LOOK, and in 1991 it published UI-Atlas, a distributed-computing architecture meant to answer OSF's DCE.
Two consortia with their own Unix, their own toolkit and their own desktop were precisely what customers had not asked for, and it took Windows NT to make both sides see it. The COSE truce of 1993 produced a common desktop built on OSF's Motif rather than OPEN LOOK, and when Novell bought USL the same year the consortium's core was gone. Unix International shut down in early 1994. Its opponent survived, at least in name: OSF merged into The Open Group in 1996, which has owned the UNIX trademark ever since. SVR4 itself arguably won the war anyway, as the basis of Solaris and most commercial Unix thereafter.