In this paper we describe an approach and an implementation for integrating Web technologies in Eclipse, a Java- and component-based platform. First, we support embedding of UI (user interface) artifacts that are developed using either widget or markup technologies. Second, we provide support for DOM (Document Object Model) programming. We implement this approach by bridging the relevant foundation technologiesCOM (Component Object Model) and XPCOM (Cross Platform Component Object Model)which allows us to embed the engines of the two major browsers, Internet Explorer and Mozilla®. We discuss several possible applications of this work, such as seamless access to online help systems and Web-based development of administrative tools.