Running Unity from the command line has a few benefits. And its easy: UNITY_VERSION=4.6.7p4 BRANCH=trunk /Applications/Unity$UNITY_VERSION/Unity.app/Contents/MacOS/Unity -projectPath /Users/chris/Projects/MyProject/$BRANCH/unity_project Open multiple projects! You can specify a Unity version (I usually immediately rename Unity to Unity$VERSION due to needing multiple versions of Unity installed). You can open up multiple branches of a project at the same time… Continue reading Unity Tips: Running from the Command Line