GWT Components (GWTCOMP) is a set of reusable graphical components for developing rich Web applications. GWTCOMP is developed using the Google Web Toolkit (GWT) framework and it supplements the features and services provided by GWT and other widget libraries. GWT is a popular framework from Google for developing AJAX applications using the Java programming language instead of HTML, JavaScript, and other scripting languages. Whereas the GWT framework provide low-level graphical objects for handling basic functions like buttons, images, and text boxes, GWTCOMP provides more complex graphical objects that are needed by real-life applications. An example of such an object is the Live Data Panel, which enables applications to display and update charts in real-time using a data source that resides in the server.