Git is a distributed version control system.
Git was designed to handle everything from small to very large projects with speed and efficiency. It is known for being very powerful but having a somewhat steep learning curve.
Git was originally developed by Linus Torvalds in 2005 for use for the Linux kernel and has spread from there. It is also used as part of the backbone behind popular web-based hosting sites such as Github, Bitbucket and Gitorius.