Wiki hosting

Wetpaint is one of the most intuitive wiki hosts. It has a wide range of nice wiki page designs to choose from.Wetpaint

PBWiki offers a wiki hosting service with advanced features. It's easy to upgrade an account to adapt to increased demands.PBWiki

With Wikispaces you can create simple web pages which can be edited by a group of people.Wikispaces

Wikia host community wikis for free. The service runs on the same software that powers Wikipedia.Wikia