RecentChangesCamp is being held off the North American continent! Yay!!
If you are in Canberra Australia on August 11th please attend.

From WikiIndex

This category is for wikis that are known to use a custom engine. Heavy customizations of known engines may qualify, beyond a certain level. Use your best judgment.

When deciding whether a wiki belongs here, keep in mind that there are LOTS of engines out there. http://c2.com/cgi/wiki?WikiEngines holds a comprehensive list.