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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.

OpenVBX allows developers to build voice and SMS applications for business, such as toll free phone numbers, call forwarding, voicemail, visual voicemail, voicemail transcriptions, and auto-attendants. It

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

ExtremeTech provides deep technical content about new products and technologies. It reaches committed, active technology users, managers, and enthusiasts through detailed reviews, analysis, tutorials, extensive resource links, and interactive, discu...

Linux.com - For the community, by the community, Linux.com is the central source for Linux information, software, documentation, how-tos and answers across the server, desktop/netbook, mobile, and embedded areas.

Adafruit Industries, Unique & fun DIY electronics and kits : - SpokePOV MiniPOV SIM reader Tools MintyBoost Gift Certificates Digg Button AVR Development Arduino Useful stuff BoArduino TV-B-Gone Game of Life Breakout Boards YBox2 Drawdio XBee Fu...

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

Serving the Technologist for more than a decade. IT news, reviews, and analysis.