YARI is a comprehensive tool suite to debug (layouts), spy, spider, inspect and navigate SWT and Eclipse based application GUIs (Workbench or RCP) at runtime.
This application uses XML files as input to apply a XSLT transformation and export user-readable documents, such as HTML or LaTeX.
Il was originally intended to create Yearbooks based on the already existing files with details about an organisation.
Swing Spy is java based Swing/AWT spy agent that prints the widget under the cursor (like Spy++ for Windows/MFC and SWT Spy for Java-SWT). Download from the homepage: http://www.nenoff.com/swingspy/