Here's an overview of several less common but powerful Zwiki features. You may encounter zwiki sites with one or more of these available.
Get an RSS feed of recently changed and recently created pages. RSS.
Use wiki pages to track bugs and issues in a simple and effective way. ZwikiIssueTracker.
Zwiki can support live DTML code in wiki pages; a very powerful feature. DTMLScripting?.
Develop and run live colour-coded software test suites in wiki pages. ZwikiAndFit.
You've learned about five additional features supported by Zwiki: RSS, issue tracking, DTML scripting, fit and latex.