Firefox increasing rate since Firefox 1.0 was released on November 9, 2004, and Firefox had already been downloaded over one billion times. This number does not include downloads using software updates or those from third-party websites. They do not represent a user count, as one download may be installed on many machines, one person may download the software multiple times, or the software may be obtained from a third-party. In July 2010, IBM asked all employees (about 400,000) to use Firefox as their default browser. Firefox was the second-most used web browser until November 2011, when Google Chrome surpassed it. According
ProtoShare a Microsoft Word doc, as an archived HTML site, or to a web URL. ProtoShare is browser-based software, compatible with multiple operating systems. Internet Explorer 10, latest Firefox, latest Safari, and latest Chrome browsers on both Windows and Mac OS are supported in the Review section of the tool, which is where collaborators interact with and comment on prototypes. Mobile prototypes can also be linked to a handheld mobile device's browser for app simulation. The build and edit functionality of ProtoShare, where developers create the prototypes, is supported by the latest Firefox, Safari, and Chrome browsers on Windows and Mac