Download: Xfire 1.94 - Multiplayer Messenger and Server-Browser
Xfire has been quite a name in e-sports for some time. It isn't just showing who is online at the moment it also reveals what they are playing.
A single click allows you to join the match, according to the provider, Xfire is supporting more than 1,000 games. Of course communication is possible while playing and not just at the Windows desktop. The program also offers an integrated server browser.
Xfire is free and downloadable right here. The new version 1.94 adds, among some minor improvements, support for Grid and Alone in the Dark.