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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...

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Free Windows Software Download

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

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

Tom's Guide: Your High Tech Source of Information, Find News, Reviews on TomsGuide.com

PC-Telephone, free download. PC-Telephone 5.8: Use your computer as an Internet phone.

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...

Get product information, support, and news from Microsoft.

FreeCall, free download. FreeCall 3.02: Make free calls to many countries.

Viber is an application for iPhone and Android phones that lets you make free phone calls and send text messages to anyone who also has the application installed.