Qvacua is online!
The only Mac app you can download there is Qdesktop. Version 0.0, so, don’t expect too much. It lets you set an arbitrary web page as the desktop background of the main screen. Multi-screen support is to come. You can also use the
file://... URLs to load offline web pages (or animated GIFs!). To interact with the web page, select “Toggle Background” from the menu. After you have positioned or zoomed in/out the page, select “Toggle Background” again and there you go. Where is the menu? See the following screenshot: