Timeline: 40 years of Unix
Year-by-year details of Unix’ history
Unix turns 40: The past, present and future of a revolutionary OS
On the shoulders of giants: Three Unix movers and shakers
A look at the profound impact three innovators have had on Unix
The Unix family tree
Survey: Unix has a long and healthy future, say users
Computerworld's 2009 survey on Unix use shows that the OS will be alive and kicking for some time to come.