A community-driven framework for managing your zsh configuration. Includes 40+ optional plugins (rails, git, OSX, hub, capistrano, brew, ant, macports, etc), over 80 terminal themes to spice up your morning, and an auto-update tool so that makes it easy to keep up with the latest updates from the community.
Hosting git repositories -- Gitolite allows you to setup git hosting on a central server, with very fine-grained access control and many (many!) more powerful features. [IMPORTANT: please click and read the WIKI link above before submitting issues, pull requests, etc]