Jon Mell looks at three social software platforms being marketed to the corporate world.
Here are the conclusions, but check the article for more detail:
"Jive - strongest discussion feature, the most depth in terms of customisation, the most “rounded” in terms of general use, has “Community” offering for public-facing projects. Subscription based pricing.
Connections - strongest profile features, excellent at finding expertise. One-off perpetual license model. Significant improvements coming in the Summer release. Can be used as a social operating system to power other applications
Socialtext - strongest wiki and status features, has offline capability and Sharepoint integration. Available as an appliance. Desktop client could have a dramatic impact on adoption"