Phoner Lite is a Portable VOIP (Voice Over IP) or Internet Phone that can be used to "make phone calls using your computer" enabling you to establish Voice over IP communication with your friends, colleagues, clients and more. Phoner Lite is Freeware and shares the same basic code as Phoner, however utilizes a different GUI.
PicoPhone is a Free VOIP Internet Phone application with chat. The author created PicoPhone because most Internet phones use overly complex protocols that can cause problems when used with NAPT routers.
12Voip is free Portable Voice Over IP software (Internet Phone). Like many other VOIP products, it enables a computer user with internet access to have superb high quality voice conversations with friends and relatives from all over the world.
Phoner is Free electronic portable VoIP Internet Phone software that enables a user to make and receive VoIP calls through SIP. Perform Voice over IP communication with your friends, colleagues, clients etc.