Quicken is an easy to use personal accounting program from Intuit. It comes in two versions that work with OS X 10.8 at this time.

Quicken Essentials

The current version for sale from Intuit is Quicken Essentials  This is not a full featured version nor on par with any Windows version. It is a complete rewrite.

Quicken 2007 for Mac

This is an old version that has been updated to work under OS X 10.8. A good working standard version that does not suffer from the lack of features in Quicken Essentials but does not have the full feature set of Quicken for Windows. It is available for download purchase directly from Intuit for $14.99 at this link http://quicken.intuit.com/personal-finance-software/quicken-2007-osx-lion.jsp