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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.

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...

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.

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

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Welcome to VOIP Today Magazine Wednesday, 10 November 2010 10:09 Carrier-class telephony analytics for the enterprise.

The official source to download free Yahoo! software for Unix. Download Firefox 3.6, Flock, Zimbra Desktop from Yahoo! and Foxy Tunes free music add-on.

Office SIP Server is free VoIP and Instant Messaging Software

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

the best softphone for service providers