Webkit App Bar
was originally intended as an application launcher (on left side in the screenshot) written in Python with using QtWebKit.
Now includes a simple plugin system, allowing the creation of any kind of desktop widget.
fixed WM detection
fixed problem with diacritics in the application path, thanks to lillgrinn
new version with plugin support - few examples included
few fixes, new "empty project", new example - app launcher with autohide property