Xfce 4.12 a new stable version that supersedes Xfce 4.10 was recently released. Xfce is a lightweight, open-source desktop environment for Linux and Unix systems. It is based on GTK+2, and a partial support for GTK+3 implemented. This latest release focused more on polishing user experience on the desktop and window manager, and on updating some components to take advantage of newly available technologies. Xfce 4.12 key highlights The window manager gained a new themable Alt+Tab dialog with optional windows preview and a list mode.