Asterisk - Top 10 VoIP Leaders

What makes it a fierce leader: With Google showing to the wider world the power of having many developers working for an open non-proprietary platform, the time may just be right for VoIP open source software, Asterisk. With a significant user base and several hundred active developers, Asterisk is increasingly appealing to enterprises which don't want to be paying out per telephone license fees to I-PBX providers. Now deployed in an estimated 250,000 installations, Asterisk was the brain child of Mark Spencer, whose Alabama based company Digium is a major player in the open source VoIP space.
What to look for: With Asterisk getting formal acceptance from major software providers and chip manufacturers, the times are right for what is now a relatively mature and robust platform. And with so many enterprises now building on Linux servers, Asterisk creates an opportunity for institutions to dramatically and permanently slash their communication deployment and operational costs.