
Bazaar Explorer
GUI application for using Bazaar
Bazaar Version Control System
Easy to use distributed version control system
Giggle
Git repository viewer
Git Cola
The highly caffeinated Git GUI
Git DAG
Git DAG visualizer

qgit
git repository browser

tkcvs
A graphical frontend to CVS and Subversion.
TortoiseHg
GUI application for using Mercurial

hgview
GUI application for using Mercurial

kdesvn
A Subversion client by KDE
Push Me Pull You
Graphical interface to popular DVCS systems.

gitg
Git repository browser

teamGit
Organize, enjoy, and share your code

RapidSVN
Manage Subversion repositories