TortoiseSVN - The coolest interface to (Sub)version control
Working Copy - The powerful Git client for iOS
SnailSVN - Similar to Tortoise SVN for Windows but integrated into Finder
Source iOS - The best git client and code editor for iOS.
RapidSVN - CollabNet, Facilitating Collaborative Software Development
GitKraken - The intuitive, fast, and beautiful cross-platform Git client.