zimwiki pros: * open source * stored as a bunch of linked text files * can version control with git * wysiwyg markdown(media-wiki syntax) editor http://zim-wiki.org/
* The files can live anywhere (say, the Dropbox folder)
* The files are plain text
* The markup is minimal and there is UI for it
* The app is a bit old-school - none of the flat ui, panes, online-email-style stuff. No Electron.
All good so far. Yet the app forces the user to organize stuff into linked pages. Let's see whether I have the patience to stick with it.