PasswordSafe has been around for a few years, and it has evolved considerably over time. The following table has links to pages detailing the release history of PasswordSafe since the project was made open source. This can be useful for seeing what features were added and what bugs were fixed since a given release.
2009 Releases 3.16-3.20
2008 Releases 3.12-3.15.1
2007 Releases 3.06-3.11.1
2006 Releases 2.16-3.05.02
2005 Releases 2.08-2.15
2004 Releases 2.0-2.07
2003 Releases 1.91-1.92c
2002 First Open Source release