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.
BundleInspector: graphical overview of all osgi-bundles
EclipseInspector: provide information of the workbench
Extended S-Leak: search now for equal ressources
SWTHyperGraph: tree overview of the widget hierarchy
SWTInspector: show details of the selected widget
UiInjector: simplifies layout debugging and data injection