9e2d0a54_Linux_Desktops_Window_Managers__Design_Goals
[Desktop/Window Manager] ROX Desktop [Description] Desktop manager based on the ROX-Filer [Based On] ROX-Filer file manager and the OroboBox window manager [Advantages] Unique file-based design makes installing apps drag and drop [Disadvantages] ROX Desktop is either a love or hate affair [Design Goals] 
Approaches the OS in a file-centric way
PLABO: A Sampling of Linux Desktops/Window Managers
Design Goals