If you are looking for an editable graphical form of family tree, you might appreciate GenoPro. It is a simple client (resident on your Mac, not online) software, downloadable from its website. You can easily create a constantly modifiable tree according to additions and amendments, no limits to the number of people involved. You also can create a 'report', which summarizes all the data according to each person or each surname listed.
Davide Csermely
Italy