Freeware: Ilbc

3CX VOIP Phone for Windows 1.0Free VOIP / SIP phone. Use your PC as a phone. Works with any SIP/ VOIP provider/ phone service. Easy to use interface to transfer, forward calls or set-up conference calls.

Callbackbutton for your own Website 2.0Siphome classic is a tariff for a VOIP-call-back-button for oneT+s own website. Features: Outgoing calls to other SIP-and IAX-addresses the SIP-and IAX-address will be transfered standardly as well as the name-alternatively anonymous.

ekiga Talk Multimedia Communicator 2.0.11callbackbuttun is also a very clevere alternative to classical 0800 it the service number. Because a 0800'er call number costs not only uniquely (only alone the dispatching costs 62.

kphone 4.2callbackbuttun is also a very clevere alternative to classical 0800 it the service number. Because a 0800'er call number costs not only uniquely (only alone the dispatching costs 62.

3CXPhone FREE VoIP Phone for Windows 4.0Free VOIP / SIP phone (softphone) for Windows. Use your PC as a phone. Works with popular VOIP providers and SIP PBX's (including 3CX Phone System). Easy to use&light weight. Full version, not a lite version! Free download from http://www.3cx.com