This is ontoworld.org, the wiki for the Semantic Web community. Our mission is to provide a knowledge repository and platform for advertising events, spreading news, and announcing new developments. It is a wiki: everybody can quickly edit its content, even without logging in. So look around and participate!
Platypus Wiki is an enhanced Wiki Wiki Web with ideas taken from Semantic Web. We call it a Semantic Wiki Wiki Web. It offers a simple user interface to create a Wiki Page plus metadata according with W3C standards.