HEATKEYS

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...

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

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.

Reviews and free software downloads for Windows, Mac, Palm, Pocket PC, and Mobile Phones. The best programs and games. Buy software directly online.

Cisco (NASDAQ: CSCO) is the worldwide leader in networking that transforms how people connect, communicate and collaborate.

SIP Tester, free download. SIP Tester 3.1: SIP tester is a free VoIP load testing tool to check SIP hardware or software.

Free pc-to-pc, cheap pc-to-phone, pc-to-fax, phone-to-pc calls over Internet, LAN or ISDN/PSTN telephone networks. Use your PC as internet telephone, ISDN phone, USB phone, USB handset, answer phone, fax and voicemail for pc-pc, pc-phone, pc-fax, pho...

Since 1983, developing the free Unix style operating system GNU, so that computer users can have the freedom to share and improve the software they use.