Alcatraz is an open-source package manager for Xcode. It lets you discover and install plugins, templates and color schemes without the need for manually cloning or copying files. It installs itself as a part of Xcode and it feels like home. via alcatraz.io
Alcatraz is like the package control of Sublime Text for Xcode. It has integrate beautifully into Xcode and when you use it, it feels like part of Xcode. You will be surprise how many plugins are there available and it is free. Download Alcatraz.