Working Copy - The powerful Git client for iOS
Git2Go - The Git client for iPhone and iPad you always wanted
CodeHub - CodeHub is the most complete, unofficial, client for GitHub on the iOS platform.
Sublime Text - Sublime Text is a sophisticated text editor for code, html and prose - any kind of text file. You'll love the slick user interface and extraordinary features. Fully customizable with macros, and syntax highlighting for most major languages.
Git Flow - Git Flow is a very self-explanatory free software workflow for managing Git branches.
GitKraken - The intuitive, fast, and beautiful cross-platform Git client.