sip

Auto Dialer, VOIP Autodialer, Phone Dialer, SIP SKYPE PSTN PC to Phone Broadcast

Fax Voip - virtual T38 Fax & Voice modem for SIP. Works with standart fax soft.

TekFax is a SIP (Session Initiation Protocol) fax receiver server runs under.

TekPhone is a SIP (Session Initiation Protocol) conference server

Command Line SIP User Agent for Windows

Freeware SIP interactive voice response system

Brekeke PBX is a SIP-based, full-featured Business Telephone System.

Brekeke PBX is a SIP-based, full-featured Business Telephone System.

Easy to use Free SIP Softphone for voip providers

mobile internet calls & IM for Skype, Google Talk, MSN & SIP over 3G/GPRS/Wifi