Personal Ancestry Writer II is an excellent, but somewhat lesser known, genealogy program for Macintosh systems. It is capable of holding more than 2 billion individual entries, each of which can hold more than 2 billion characters of text (and up to 10 spouses/partners with up to 30 children each). It features a user interface that is easy to use. In fact, entering data is a snap.
I wrote a review last year of Personal Ancestry Writer II version 50, which you can read at http://blog.eogn.com/eastmans_online_genealogy/2006/03/personal_ancest.html. Author Howard Metcalfe has obviously been busy since then; he has now released version 69 with many new features. You can read a review of the latest version, written by Jeffery Battersby and published in the prestigious magazine, MacWorld. Mac owners will want to read this article at http://www.macworld.com/2007/05/reviews/paw69.