gitflow : Git extensions to provide high-level repository operations for Vincent Driessen's branching model.
Code Maat : Code Maat is a command line tool used to mine and analyze data from version-control systems (VCS).
Dolt : Dolt is a SQL database that you can fork, clone, branch, merge, push and pull just like a Git repository.
Connect to Dolt just like any MySQL database...
DeepGit : DeepGit is a tool to investigate the history of source code. It combines Git Blame and Log information and makes it easy to trace changes to a line or...
Git Extensions is the only graphical user interface for Git that allows you control Git without using the commandline. It comes with a manual and video tutorials to get you started quickly.