GitHooker provides a framework for building test that can be used with git hooks

Github style assets bundling in a Rails 3 engine

a gem to have the same output as the github branch list page

an easy way to clone all your projects from github

A gem to generate organization reports based on pull requests and commits.

Since you can't delete GitHub repos via the API, you have to pretend to be a web browser. This is probably very fragile and could stop working at any time.

Upload files to github, useful in your Rakefile.

A command line tool that can be run via cron that configures and manages Xcode server bots for each pull request

Just writing a gem to get user information through the github api

Gitload provides a DSL to easily clone all your repositories from GitHub and other providers.

Command line tool for fetching and configuring git directories

A Rails gem that integrates Gitmodel (https://github.com/pauldowman/gitmodel) with Ruby on Rails

Git API Gem utilizing the Network API

Manage a remote gitolite-admin repository.

Easy gitosis configuration

Provides a set of git workflow tools to start and finish Pivotal Tracker stories in topic branches

With this tool, you can do a git commit with a redmine issue id. The message of the commit is filled with the title of the issue automatically.

gitreport keeps track of your projects. It collects info about commited and pushed data, submits it to gitreport.com and provides a gorgous frontend to examine, discover and extract the data that you need to generate the payment recipes for your customers, measure your performance, find gaps and ...

Git Statistics Utility for your projects

Autosync watched directories in git