Qdos Entertainment was created in 1986.
QDOS was a subset of CP/M, then Microsoft bought QDOS and made it MS-DOS. FOXTROT!
qdos (quick dirty operating system) was created by seattle computing Microsoft bought qdos and created ibm-dos and dos 1.0 while trying to mimic the company cp/m or something to that degree. some or most people that i know would say he stole it even though he payed 50,000$ for the rights to qdos.
QDOS was developed by Tim Paterson. Microsoft bought the source and rights from him, and developed it further to create PC-DOS, which they licensed to IBM. They later licensed it to other companies branded as "MS-DOS."
Quick and Dirty Oprating System
Edgeworks Entertainment was created in 2004.
Image Entertainment was created in 1981.
Remedy Entertainment was created in 1995.
O Entertainment was created in 1990.
PLW Entertainment was created in 1997.
TH Entertainment was created in 2006.
Zuxxez Entertainment was created in 1994.
Chimera Entertainment was created in 2006.