Free VOIP / SIP phone. Use your PC as a phone. Works with any SIP / VOIP provider/ phone service. Use instead of the soft phone provided by your VOIP provider which locks you into their VOIP phone service. Easy to use interface to transfer, forward calls or set-up conference calls. Call log, call statistics & phone-book. Available in English, German, Spanish, French & Portuguese. Free download from http://3cx.com.

3CX Phone System for Windows Free edition is an IP PBX that completely replaces a proprietary PBX, supports standard SIP soft/hard phones, lowers call costs via VOIP service providers whilst still supporting traditional PSTN phone lines. Developed for Windows - Easy to install and configure! Scaleable to thousands of extensions & eliminates the phone wiring network. Download FREE edition with no limitations or time outs.