Macintosh
Step 1: Learn your Mac OS X Version
Step 2: Choose your instructions
Option 2.1: Mavericks
Go on to OS X RVM
Option 2.2: Mountain Lion/Lion/Snow Leopard
RailsInstallerGo on to OS X Railsinstaller
ManuallyGo on to OS X RVM
Option 2.3: Leopard/Tiger/Panther
Go on to OS X Panther
Back to Choose Your Operating System