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Asterisk is free software that transforms a computer into a communication server. Asterisk lets you build applications like PBX, VoIP gateway, IVR and ACD.

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...

Phone systems to power your business. Turnkey business phone systems, IP PBX phone systems, VoIP phone systems, and Asterisk telephony software.

VoIP PBX Software by Taridium and Enterprise VoIP Solutions - The Taridium ipbx PBX Software is a complete software-based VoIP PBX system that replaces traditional proprietary hardware PBX. ipbx runs on standard server hardware, without the need for ...

SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory

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

SIP Hosted PBX, Multi-Tenant, VoIP Platform for Service Providers - provides scalable and reliable SaaS IP Telephony Platform. Based on the Session Initiation Protocol (SIP), the Brekeke products provide robust SIP Communication Platform for Service ...

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Savannah is a central point for development, distribution and maintainance of Free Software. It allows contributors to easily join existing Free Software projects.