Cervisia
Cervisia is a graphical front end for Concurrent Versions System (CVS).
Cervisia implements the common cvs functions of adding, removing, and committing files. More advanced capabilities are importing and checking-out modules, adding/removing watches, editing/unediting and locking/unlocking files, blame-annotated file viewing, tagging/branching, conflict resolution/mergings and the ability to update to a given tag, branch or datae. Additionally, it has graphical functions that include tree and list view of the change log of a file, color coded file status, and graphical diff'ing between versions, similar to xdiff.
Cervisia requires Qt 4 and KDELibs 4. kdelibs is necessary to run Cervisia, but it not necessary to run KDE SC to use Cervisia, as it works under all window managers.