Ranked in these QuestionsQuestion Ranking
Pro Comprehensive interface
Pro No registration at all
Doesn't require registration to use.
This application is FOSS, and thus it can be freely modified & distributed.
It comes with many plugins and you can build your own. Included by default are some very neat visualization tools for Repository metrics.
Pro Easy to add add action in the GUI
Right click to add a script to delete remote branch or tag...
Con Poor UI
Rich developer experience but awful interface.