Git Hub is a web based GIT repository.It provides access control and several collaboration features such as bug tracking, task management, feature requests and wikis for every project.
Its such an helpful tool for all the programmers to collaborate and work together, now I can’t really imagine how the life of a programmer would be without git and git hub.
The another cool part of git hub is that it provider free hosting so you can host the project on git hub public repository.
I would recommend for programmers to join learn and use git hub.com.