Google Voice (formerly GrandCentral) is a telecommunications service by Google launched on March 11, 2009. Google Voice had some 1.4 million users in October 2009, 570,000 of whom used the service 7 days a week. This number has risen markedly since Google made the transition of its Google Voice service from 'invitation only' to be available to all Gmail subscribers. However, Google has not released a more recent number of users, claiming only that it is in the millions. The service is configured and maintained by the user in a web-based application, styled after Google's e-mail service, Gmail, or through the service's Android and iOS apps. Google Voice currently provides free PC-to-Phone calling and PC-to-PC voice and video calling worldwide between users of the Google Voice and Video Chat browser plugin (available for Windows, Intel-based Mac OS X, and Linux). Users in the US may place outbound calls to domestic and international destinations from their cell phone app, from the web-based application, or by dialing their Google Voice number. As of August 2011, users in many other countries also may place outbound calls from the web-based application to domestic and international
Contributions by Froggy26rk, BlastOButter42, and Two Bananas.