FogBugz 1.0 shipped November 2000 (http://www.foundersatwork.com/joel-spolksy.html)

Version history (http://en.wikipedia.org/wiki/FogBugz#Version_History)

Version 2.0 - March, 2001

Version 3.0 - November, 2002

Version 3.1 - February, 2003

Version 4.0 - December, 2004

Version 5.0 - March, 2006

Version 6.0 - August, 2007

Version 7.0 - July, 2009