This document discusses HTML5 features for mobile development. It notes that HTML5 has come to mean more than just the W3C specification, including CSS3, audio/video, WebSockets, local storage, offline storage, Canvas, SVG, new touch and device events, and geolocation. These features provide many benefits over native mobile apps like a single code base for multiple platforms and devices. While native apps currently have better performance and access to all device features, HTML5 mobile performance is improving and missing features are being added to browsers. The document demonstrates several mobile HTML5 apps and concludes that HTML5 features will continue to be rapidly added to browsers.