When comparing Polynote vs MDwiki, the Slant community recommends Polynote for most people. In the question“What is the best cross-platform note-taking app?” Polynote is ranked 59th while MDwiki is ranked 70th. The most important reason people chose Polynote is:
Multiple users can edit a note simultaneously, in real time.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Real-time collaborative
Multiple users can edit a note simultaneously, in real time.
Pro Minimal interface
The application is simple and fast. Can create, share and organize notes and notebooks on the same page.
Pro Possibly more secure on web server
Due to the lack of a built-in editor MDwiki may be less susceptible to spam and defacement compared to other options when served from a web server.
Pro Doesn't require a web server
MDwiki is a self-contained JavaScript app that is very fast and can run in some web browsers such as Mozilla Firefox.
Cons

Con No free tier
Plynote has a 15-day free trial after which it requires a 20$/user/year subscription.
Con External program must be used for editing
A separate program must be used to make changes to documents as MDwiki lacks a built-in editor.
Con Requires additional permissions in Google Chrome
Supposedly, you can get it to work in Google Chrome by modifying JavaScript permissions, but these same changes may decrease security.
