Unix System Laboratories
Unix System Laboratories (USL), sometimes written UNIX System Laboratories to follow relevant trademark guidelines of the time, was an American software laboratory and product development company that existed from 1989 through 1993. At first wholly, and then majority, owned by AT&T, it was responsible for the development and maintenance of one of the main branches of the Unix operating system, the UNIX System V Release 4 source code product. Through Univel, a partnership with Novell, it was also responsible for the development and production of the UnixWare packaged operating system for Intel architecture. In addition it developed Tuxedo, a transaction processing monitor, and was responsible for certain products related to the C++ programming language. USL was based in Summit, New Jersey, and its CEOs were Larry Dooling followed by Roel Pieper.

Created from earlier AT&T entities, USL was, as industry writer Christopher Negus has observed, the culmination of AT&T's long involvement in Unix, "a jewel that couldn't quite find a home or a way to make a profit." USL was sold to Novell in 1993.
Q2843047
AT&T
ORG
Q11368
Unix
Concept
Q9135
operating system
Concept
Q633192
UNIX System V Release 4
MISC
Q2495515
Univel
Concept
Q223407
Novell
ORG
Q1148628
UnixWare
MEDIA
Q262238
Intel architecture
MISC
Q2190596
Tuxedo
Concept
Q953487
transaction processing monitor
UNK
Q2407
C++ programming language
MEDIA
Q1000642
Summit, New Jersey
LOC
Q2612636
Roel Pieper
PER
Q2297159
Unix System Laboratories
ORG
1989-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1989
DATE
1993-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1993
DATE
1993-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1993
DATE
+4^^http://www.w3.org/2001/XMLSchema#decimal
4
NUMBER
developer
subclass of
instance of
programming language