Mitel - Business Communications and Collaboration
Google Voice - Google Voice gives you one number for all your phones, voicemail organized in an email format, free...
CounterPath Softphone Client Suite - CounterPath enables users to make VoIP audio and video calls, send instant messages and manage their presence in an easy-to-use software.
Phonebooth - Phonebooth is one of the leading voip providers, providing phone systems & phone service for small businesses.
XO Hosted PBX - Hosted PBX is a scalable UC solution that uses cloud technology to integrate HD voice & data services, mobility, along with advanced calling
Eir SIP Voice - eir SIP Voice is revolutionizing the core communications tool of business that carries both calls and data over just one connection.