Some collaboration portlets available include:
Login/ Logout - as it says on the tin
Membership - join/ unjoin from workspaces
Schedule - calendar for workspace
Resources - resource list and links
News - news service
Discussion - threaded discussion service
Chat - online chat room
Anabas - join and participate in Anabas Impromptu collaborative session via applets
Newsgroup (Read/ post) - topic-based threaded newsgroup tool using Indiana XML schema
Newsgroup (Request) - request a new topic
Newsgroup (Admin) - for admins only!
Bibtex (Read/ edit) - add/ edit entries in Bibtex topics for shared authorship of reference lists. Uses Indiana XML schema
Bibtex (Request) - request new Bibtex topic
Bibtex (Admin) - for admins only!
Bibtex (Super Admin) - for super admins only!
Customize - chose which tools you want in the workspace, edit portlet layouts etc.