sip dialer

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

G729 Plugin codec for RTC Sip softphone

The simple, easy-to-use and free instant sip messenger.

Access your contacts information with Reminder, Dialer, Print, and Photos.