When comparing Xwiki vs MDwiki, the Slant community recommends Xwiki for most people. In the question“What are the best open source wikis with native markdown support?” Xwiki is ranked 1st while MDwiki is ranked 2nd. The most important reason people chose Xwiki is:
More than [600 extensions are available](https://extensions.xwiki.org/xwiki/bin/view/Main/).
Ranked in these QuestionsQuestion Ranking
More than 600 extensions are available.
You can try out XWiki in the Online Playground.
Cloud and Hosted offers are available.
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
Con No SQL Server support
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