Until 0.0.14, screenlets were exclusively scripted in Python and drawn in SVG. Afterward, support was added for web widgets (widgets which are written in HTML, JavaScript and CSS, similar to widgets for Apple Inc.'s Dashboard). The engine also supports Google Gadgets.1
Google Gadgets now run on Screenlets engine http://screenlets.org/index.php/Google_gadgets_now_run_on_Screenlets_engine_... ↩