Status: Active development.

Link: http://www.microsoft.com/mac/downloads.mspx?pid=Mactopia_Messenger#viewer

Pros: Very nice interface, intuitive yet bold. Supports more features than you'd think.

Cons: Doesn't go far enough to stand out from the crowd, no extras available.

Review: With a new version on the horizon promising A/V support, this may be one to watch. The current interface is certainly quirky and, whilst interesting, it can be limiting, especially when it comes to the multiple avatars piling up in a a group chat scenario. The Mac version of this protocol's app is also rather behind the times, although not nearly as much as ICQ's Mac "efforts".