Megafon

Megafon apps is Talk without limits

Platform: Mac

Coccinella

Coccinella apps is Chat client with a built-in whiteboard

Platform: Windows

Wambo

Wambo apps is A chat client compatible with MSN, Google Talk, AIM and Yahoo

Platform: Windows

AIM Preview

AIM Preview apps is Video chat and more with the new and improved AIM

Platform: Windows Platform: Web Apps

Paltalk

Paltalk apps is Talk and video chat with people from around the world

Platform: Windows

Express Talk

Express Talk apps is Virtual telephone compatible with most VOIP services

Platform: Windows Platform: Mac

eBuddy Mobile Messenger

eBuddy Mobile Messenger apps is Messaging client supporting MSN, Yahoo, AIM, Google Talk and Facebook

Platform: Java

TeamSpeak

TeamSpeak apps is Talk with your friends or enemies while battling it out on the net

Platform: Windows

Messages

Messages apps is Apple's official chat client for OS X

Platform: Mac Platform: Android

TeamSpeak

TeamSpeak apps is Communicate with your friends over the net

Platform: Windows Platform: Mac

IM+

IM+ apps is Chat in Facebook, Skype, MSN/Live Messenger, Google Talk, Yahoo!, AIM/iChat, ICQ, mig33, SINA Weibo, Mamba.Ru, Fetion, Jabber, VKontakte, Yandex IM, Odnoklassniki, RenRen and Mail.Ru Agent on the go!

Platform: Android Platform: Symbian

WebPhone

WebPhone apps is Talk with the whole world via Internet

Platform: Windows