Paul Ferguson, who created MacFIBS, is also the creator of the GridGammon for Macintosh software you're currently running.
As a result, there are obvious similarities between MacFIBS and GridGammon; GridGammon will feel familiar.
However, GridGammon offers many features not found on FIBS. If you are an experienced MacFIBS player but new to GridGammon, these topics will introduce you to these features.
Guest, member, and cash accounts
Tournaments and other special events