mig33 Mig33 is the largest mobile chat community, connecting millions of mobile friends all around the world
Slick Slick is instant messenger application for Symbian mobile devices supporting ICQ, Yahoo, AIM (more to be added later)
MovaMessenger The fastest and easiest way to get your buddies on your mobile phone
T2Me (Push-to-Talk) for SE A Push2Talk system which turns your cell phone into a virtual Walkie-Talkie; It enables voice messaging with other T2Me users simply by typing in their number and a button-push
Bluehoo Make new social connections with people around you!