gitsome - Supercharged Git/Shell autocompleter w/ GitHub integration
Diff So Fancy - Make Git diffs look good
Kite - Kite helps you write code faster by bringing the web's programming knowledge into your editor.
Working Copy - The powerful Git client for iOS
YOURLS - YOURLS is a website that contains all the tools you need to create and launch your very own URL shortener. URL shorteners like bitly or TinyURL are fine for public use, but they offer limited options in terms of URL customization.
CodeHub - CodeHub is the most complete, unofficial, client for GitHub on the iOS platform.