Micromatas GWiki is now OpenSource
We are opening our embeddable Wiki engine "GWiki", which is written in Java with the Apache License 2.0 to all backend Java developer in the world. If you want to allow your customer to edit rich text fragments in your app, even their I18N files or mulitimedia content in the Wiki-way... try our GWiki - it rocks.
Since Gwiki can be extended with macros written in Java or Groovy it really flexible. The powerful right and role system (can be feeded from external sources such as LDAP) even allows the acces to business entities from wikipages.
Wicket integration comes out-of-the-box and has a quite nice feature: You can hold the Wicket-HTML-Fragments within GWiki, so this pages can be managed by the Wiki System, Wicket does the app-logic - every Wicket developer mus see this, it's great!
GWiki does not depend on a database, for content-storage you can configute, files, ZIP-Arcive or a database. We love to store the GWiki content in a SVN managed Filesystem ;-)
have a good time