ZDNet has a very high level overview of various social and collaboration options. It’s a 19 slide review of tools like IBM, Jive, Microsoft, Yammer, Chatter, Box, Dropbox, etc. That means it cuts across a wide range of collaboration options that meet a wide range of tools. For those just getting into social, this is a start. It also highlight the mobile clients of each vendor.
ZDNets view of social
