HyperCard above all.

Other favourites include: DOCMaker, TypeStyler, Claris Emailer, MacLinkPlus, WordPerfect, WriteNow, the ever useful ResEdit, TomeViewer, InformINIT and GURU (GUide to Ram Updates), FileBuddy, the FWB Utilities, and -- why not? -- TattleTech.

(I surely left out something, but oh well)

Cheers

Rick