Firefox OS is a new mobile platform built entirely using HTML5 and standard Web APIs, formerly known as Boot To Gecko (B2G). It aims for freedom from proprietary mobile platforms by being 100% open source. It has a simplified infrastructure with a web browser and web-based UI/content running on top of a web engine and standard device APIs. The user interface is entirely written in HTML/JS/CSS (Gaia) which controls the underlying system through open web APIs. The application runtime and rendering engine is Gecko, which implements open standards. Gonk is the low-level OS based on Linux. Apps are open web apps available through a marketplace. Firefox OS runs on dev phones like Otoro and can