Paul Korm 3/17/2017 5:18 pm
It's interesting to realize ATPM/ATPO are over 20 years old, and have been gone these five years already. Mark is correct, in my opinion: ATPM/ATPO is a wonderful source of guidance for Mac users, despite that it is no-longer current.

Another source you might want to check into is Dave Winer at Scripting New (scripting.com). Dave first specified RSS and the OPML standard that powered it -- and was present at the creation of many outlining / notetaking / IM experiments and apps 15-20 years ago (or more). (He claims he invented blogging. Well, maybe.) He's a garrulous sort and may give you a different point of view than Mark in some ways.

A third source is Shelley Hayduk, inventor (along with her husband, Harlan Hugh) of TheBrain.