Now with FriendCaller make FREE Internet calls and cheap phone calls straight from your browser. If you have internet connection, PC, Headset and mic bingo, you can make free voip calls. With FriendCaller, no software installation required. It's a Java-based temporary browser applet that is loaded onto your browser when you log-in.
The best part about FriendCaller is that it is offering free voip credit to test their service using which you can call India or any other country for free. The test credit lasts for about 5 min-7min call to India. Register with FriendCaller, and make free calls using the its Java applet.
If you have iPhone, then you can also use FriendCaller on your iPhone.
If you like FriendCaller Voip service and wanna talk for long then you purchase credit from Friendcaller and make free voip calls.
PS: To make unlimited free calls to India during these holidays (till 2nd Jan 2010) try Pennytel.