iSendSMS is intended for sending SMS and MMS from PC to the mobile phones in Russia and CIS. The list of mobile operators supported is on http://www.isendsms.ru/about/gatelist.html. The program is available only in Russian.
It is an SMS plugin messenger with a reliable SMS gateway connection
Platinum Dialer is an application to make VoIP calls
BMChat is a powerful voice and video chat application
