OSX like linux is a remaster of Ubuntu, made to look like MAC OSX. Installed software: -Avant window navigator -Screenlets -Gnome global menu -Gimp -Remastersys Theme: Mac4lin. Have a look at https://sourceforge.net/projects/macbuntu-iso also.
Looks nice but we need with latest release ubuntu 12.04 or 12.10 64bit whichever you feel comfortable to make... :)
thanks man, great soft!