Contineo is a web based document management system. It supports its
users by managing documents in most popular formats. Contineo aims to
fulfill all phases of document lifecycle. You can create and develop
documents by using office software as plugin. With contineo itself, you
can publish, search, and manage the versions of documents. Further you
can communicate with some other users directly.
Contineo was founded as a pure Java project in 2003. It is the attempt
of the conversion of an easy to use und easy to extend document
management system. That's why contineo is developed under an open source
license.
At the moment contineo finally exists in version 1.2.

see http://contineo.sourceforge.net/features.html