I'm looking for anything that can be deleted and that don't required by system to work properly. So far I'm delete DVD Player.app, Chess.app, Photo Booth.app, Stickies.app, Dashboard, Launchpad.app ...
I had approx 50Gb of Windows VMs on my MacBook Pro internal SSD (128Gb) (OS X 10.7.3). I copied them to an external drive, then deleted them from the internal drive, then emptied the trash. When I ...