FirefoxOS is an open source mobile operating system built on web technologies. It allows all apps to be built as web apps using HTML, CSS, and JavaScript, and have access to device APIs. This bridges the gap between web apps and native apps. FirefoxOS aims to disrupt the current app store duopolies by bringing a fresh approach based on open web standards. All development is done through open source communities to further the capabilities of the open web. Telefonica Digital is working with Mozilla to develop and promote FirefoxOS to allow easier cross-platform app development and access to lower cost handsets.