San Francisco, CA
Vonage offers VoIP services that enable anyone to make and receive calls from a touch tone...
Skype provides a software and mobile application that allows users to make voice and video calls...
Line2 designs, builds, and operates software-based personalized phone services for iOS and Android.
Grasshopper enables entrepreneurs to build a virtual office that connects callers to employees,...
RingCentral provides cloud computing-based phone systems to help small businesses manage mobile,...
- 12/21/10 -techcrunch.com