SwingLabs  swingLabs is a Sun open-source project proposing extensions to the Java Swing GUI toolkit. Available components include:  The aim of the project is to experiment new or enhanced GUI functionalities that are required by Rich client applications. It acts as a testbed for ideas related to client side technologies. Successful project components are eventually incorporated into the core Swing toolkit for future Java versions, although API compatibility is not guaranteed. Examples of these are:  The swingLabs project is divided into several sub-projects. For example: