Git

Git is a version control ("revision control") system for programmers used to track and manage changes to code. It happens to be a decentralized system, with no "master" tree, and was originally written by Linus Torvalds to manage the Linux kernel sources.

Download git-core or

Read more about git on Wikipedia

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OLPC GIT: http://dev.laptop.org/  (for tracking and submitting bugs and tasks)

    Wiki: http://dev.laptop.org/wiki
 Roadmap: http://dev.laptop.org/roadmap
 Sources: http://dev.laptop.org/browser
 Tickets: http://dev.laptop.org/query