== Before installation ==
'''Mac OS X versions''' There are separate downloads for Apple computers that have Intel and PowerPC (PPC) processors. You will need to chose the appropriate one for your processor. If you are not sure which type of Apple computer you have, click on the Apple icon at the top left corner of your computer screen and choose "About This Mac". The line starting "Processor" will tell you which type of processor you have. The PPC download should run on Mac OS 10.5 (Leopard) on PPC computers. The Intel download, current version of the application ({{Version_Mac}}) should run on Mac OS X 10.5 (Leopard) on both Intel and PPC computers, Mac OS X 10.6 (Snow Leopard) and , 10.7 (Lion). 10.8 (Mountain Lion) and 10.9 (Mavericks) on Intel computers.
The pre-built Gramps application doesn't work on earlier versions of Mac OS X, because it needs WebKitGtk, and that doesn't work on earlier operating systems. Versions of Gramps before 3.3.1 didn't work on Lion, except for a special beta package provided as an interim measure. All Lion users should upgrade to {{Version_Mac}} as soon as practical.