MacPorts

MacPorts (formerly known as DarwinPorts) makes installing free/open source software a breeze. With over 12,000 ports available you will always have the tools you need within a few keystrokes. This easy to use command line utility allows you to automatically download, compile, install, and uninstall applications and libraries.

Download OnyX for Mac

OnyX is a multifunction utility for Mac OS X. It allows you to verify the Startup Disk and the structure of its System files, to run miscellaneous tasks of system maintenance, to configure the hidden parameters of the Finder, Dock and of some of Apple’s own applications, to delete caches, to remove a certain number [...]