HEATKEYS

HTML5 SIP client using WebRTC framework

Linphone, Free SIP VOIP client, open-source voip software for Linux, windows, mac, iphone, android. Free sip voip sdk.

Free Zoiper softphone, Web Phone & SDK for windows, mac, linux & mobile phones. Get your own OEM branded and customized softphone. Free Download

Office SIP Server is free VoIP and Instant Messaging Software

Kapanga Softphone is the premier SIP software phone integrating voice, video and fax over IP communications in one single application. Kapanga Softphone lets people make phone calls, video calls and send and receive fax while connected to a Voice ove...

3CX VOIP PBX - provides an easy to use, plug and play SIP - IP PABX for Windows. With a software based IP PBX you will save on PBX maintenance and halve your phone bill. Download the FREE edition today and break free from your proprietary phone syste...

Get Business VoIP Phones, VoIP Phone Systems and other VoIP Equipment for your VoIP solution. VoIP Supply is North America’s leading supplier of VoIP equipment and hardware. Over 85,00 served since 2002.

Blink, a state of the art, easy to use SIP client

Softphone SDK, SIP SDK, VOIP SDK, IVR SDK, IMS SDK, Softphone, Webphone, Customization Softphone

Welcome to voip.about.com, your guide site to everything Voice Over IP, also called VoIP, IP Telephony or Internet Telephony. Learn how to make free or cheap local and international calls using your PC or phone. Stay updated on VoIP hows and whats, V...

VentureVoIP is a research and development company in the field of Message Broadcasting, Predictive Dialing, PABX, Call Centre Systems and Telephone Exchanges.