GitPrep : GitPrep is Github clone. you can install portable github system into unix/linux. You can create users and repositories without limitation.
3T MongoChef : 3T MongoChef, the GUI for MongoDB, lets you edit any MongoDB data type directly in a tree-view, table-view or as free JSON text. Visually add document...
Gerrit : Web based code review and project management for Git based projects.
gitflow : Git extensions to provide high-level repository operations for Vincent Driessen's branching model.
pre-commit : A framework for managing and maintaining multi-language pre-commit hooks.
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.