Here is a list of previous TeamCity releases. For the latest release, please refer to the download page
TeamCity 4.5.6
This is the latest TeamCity version from the 4.5.x branch (release notes):
Windows installer
http://download.jetbrains.com/teamcity/TeamCity-4.5.6.exe 231Mb
Archive with bundled Tomcat (any platform)
http://download.jetbrains.com/teamcity/TeamCity-4.5.6.tar.gz 229Mb
Java EE container (war)
http://download.jetbrains.com/teamcity/TeamCity-4.5.6.war 206Mb
TeamCity 4.5.5
Build: 9103
Windows installer
Archive with bundled Tomcat (any platform)
Java EE container (war)
TeamCity 4.5.4
Build: 9071
Windows installer
Archive with bundled Tomcat (any platform)
Java EE container (war)
TeamCity 4.5.3
Build: 9035
Windows installer
Archive with bundled Tomcat (any platform)
Java EE container (war)
TeamCity 4.5.2
Build: 9029
Windows installer
Archive with bundled Tomcat (any platform)
Java EE container (war)
TeamCity 4.5.1
Build: 8975
Windows installer
Archive with bundled Tomcat (any platform)
Java EE container (war)
TeamCity 4.5
Build: 8944
Windows installer
Archive with bundled Tomcat (any platform)
Java EE container (war)
TeamCity 4.0.2
Build: 8222
Windows installer
Archive with bundled Tomcat (any platform)
Java EE container (war)
TeamCity 4.0.1
Build: 8171
Windows installer
Archive with bundled Tomcat (any platform)
Java EE container (war)
TeamCity 4.0
Build: 8080
Windows installer
Archive with bundled Tomcat (any platform)
Java EE container (war)