Unix International

Unix International, or UI, was an association created to promote open standards, especially the Unix operating system. Its most notable members were AT&T and Sun Microsystems, and in fact the commonly accepted reason for its existence was as a counterbalance to OSF, itself created to counter AT&T's and Sun's effort to provide a single Unix implementation based on the merging of System V and BSD Unix. UI and OSF thus represented the two sides of the Unix Wars in the 1990s.

UI was disbanded in 1993 when the major members of both UI and OSF formed the Common Open Software Environment (COSE).

References

• Chapter 11. OSF and UNIX International (Peter H. Salus, The Daemon, the GNU and the Penguin)