The document provides an overview of developing W3C widgets, which are local web applications that can be created using HTML, CSS, and JavaScript and deployed as a single zip file. W3C widgets are cross-platform and can run on MeeGo devices, browsers like Opera, and platforms like Oregan-networks TVs. They are easy to develop for those familiar with web technologies and provide powerful features through HTML5, CSS3, cross-domain AJAX, and device APIs. The basics of developing a W3C widget involve at least two files - a config.xml file and an index.html file.