The Razor-Qt desktop was just updated to version 0.4.0 after being in development for months. This release improves stability of the lightweight desktop, introduces several new components, offers new translations, a new theme, new panel plug-ins, and much more. The new Razor desktop components are azor-runner, razor-config, qtxdg, and Razor own menu.
Razor-Qt is self-described as "an advanced, easy-to-use, and fast desktop environment based on Qt technologies. It has been tailored for users who value simplicity, speed, and intuitive interface. Unlike desktop environments, Razor-qt also works fine with weak machines."
More information on this new desktop release can be found in this blog posting.