Nimbuzz Mobile is the best free mobile messenger that lets you call, chat, message, and send files on the go, for free. It combines all your buddies from Skype, MSN/ Windows Live Messenger, Yahoo! Messenger, ICQ, AIM, Google Talk, Gadu-Gadu, Hyves, and more.

Nimbuzz Mobile free to download and use. Nimbuzz will not charge or bill you for anything. However, since Nimbuzz uses your internet connection, incremental data charges from your provider will apply. Therefore its  strongly recommend to use the mobile client only with a flat-rate data plan or free Wifi connection.

For more feature info visit here and for download link here.