Several existing applications were scavenged for parts:
Scrunch Edit, a two-pane outliner for Org Mode and Markdown files
Clinklog, a static site generator for linklogs and microblogs
BrutalWiki, a wiki engine based in Brutalist design principles
Other third-party apps served as inspiration:
a non-linear personal web notebook
an app for creating personal non-linear notebooks
Frustrations over their issues with accessibility, performance and preservation were the main impetus behind AntiWiki. But other application models were also considered and rejected:
a wiki compiler
Or so it's called by its creators, but in reality it works more like a SSG, at least when it's not running in dynamic mode, like a "proper" wiki. Also it works off a directory full of text files, which gets unwieldy fast.
A Desktop Wiki
This is the closest thing to AntiWiki out there, down to the implementation language. Zim is much more powerful, complete with a rich text editor and subpages, but also has a couple of show-stopping problems:
(Also the included templates are horrid, but that's fixable.) The search continues.