An Xcode plugin that displays deltas against a git repo in the Xcode source editor once you've saved the file. Although Xcode shows you which files are currently added or modified in your project, there is no simple way to see what exactly has changed inside the file. With GitDiff, differences are highlighted right next your code with orange and blue lines for modified and new code respectively and red lines to indicates code that has been removed. You can even hover over the deleted and modified line numbers to see original source. GitDiff is available in Alcatraz or you can download the source from GitHub.