Editor's Note: For an update on these tools and a few others, click here for Brian's latest "email killers" slideshow.
If you do a cursory read on products such as Unify's Circuit, Cisco's Project Squared and Alcatel-Lucent Enterprise's OpenTouch Team Share (see slide 7) you'll come away with the impression that this is an exciting new set of collaboration tools that provide businesses with functionality they've lacked until now. In truth, however, these products are the latest in a long line of team collaboration apps delivered over the past year or two via the cloud-based software-as-a-service (SaaS) model. So let's point a spotlight at some of the SaaS solutions in this market niche to see what Circuit and Squared are up against. In the process, we'll get a better understanding not only of what's available, but also how popular online team collaboration apps are, who's buying them and how they're being put to use.