This document discusses hybrid mobile app trends. It describes how hybrid apps use web technologies like HTML, CSS, and JavaScript combined with native platform APIs accessed through frameworks like PhoneGap. Early hybrid apps used UIWebView, but newer frameworks compile code ahead of time for better performance. Build tools like Sencha Cmd and App Builder automate app creation by generating platform-specific code and packaging the final application. As hybrid apps improve, they may one day power full web-based operating systems.