[kc0bfv]

Tiddlywiki is fun and useful- especially in environments where they don't let you run anything other than webpages...

[deepdriver]

Came here to see if anyone'd mention Tiddlywiki. Had a coworker who swears by it, and I'm consider using it myself. The category of "personal wiki" software seems to overlap heavily with note-taking apps:

https://en.wikipedia.org/wiki/Personal_wiki