2.0 Web Solutions is on of the first companies reselling Open Atrium on pay-as-you-go, no long-term contracts basis with a free trial available.
Our customized version version called Moonlite upon standard OpenAtrium features:
Blog: A classic blog for each group that has commenting, file attachments on both the post and comments, and granular notifications.
Calendar: A calendar that lets you quickly add events, suck in iCal and other calendar feeds, and support single or multi-day events.
Group Dashboard: Mini widgets give you a snapshot of all the activity happening across your groups. Think iGoogle, in that you can turn on what you want, turn off what you don't, and arrange it all however you'd like.
Documents: A simple online handbook that lets you collaborate on documents, store and compare revisions, attach files, and once you're done print out the final copy.
Shoutbox: Kind of like a private twitter, the shoutbox lets you share short messages, links, and information with just the people in your group.
Case Tracker: A full ticketing system that lets you assign to do's and create unlimited projects within each of your groups. The case tracker also lets you classify the to do, give it a priority, and manage its status.
includes Time Sheets, Time Management and Reports, "Add another sth." feature, nice look & design, multilingual support and shortly much more to come.
30 day trial and few plans to choose from.
Best regards