[ContentCVS] Works like a version control system (CVS/SVN): Export, check-out, update, and commit [Collaborative Protégé] Two modes: Concurrent edition Several users can edit the ontology concurrently Requires a server Sequential edition Only one user can edit the ontology and then it "passes" the files to another one Does not require a server [0] 
Editorial workflow
R e q u i r e d s o f t w a r e
E d i t o r i a l w o r k f l o w
F u n c t i o n a l i t i e s
O n t o l o g y l a n g u a g e s
S t a t u s
S u p p o r t