The document discusses PhoneGap, an open source framework that allows developers to build mobile apps using standard web technologies like HTML, CSS, and JavaScript. PhoneGap packages the web app so it can be deployed and distributed as a native mobile app. Developers can write their app once and deploy it across multiple platforms. PhoneGap uses plugins to allow apps access device features like the camera or contacts. It supports building apps for iOS, Android, BlackBerry and other platforms either locally using each platform's tools or through an online build service.