The UNIX GUI Manifesto
http://www.hypertextnavigation.com/unixgui.htm

Hoffman, Michael
Hypertext Navigation

Abstract:

GUI fragmentation is the greatest competitive weakness of UNIX. There is no standard Unix File Manager or Text Editor or Help -- that's shocking, in this age! Every Windows or Mac machine has a standard file manager and text editor and help system. The casual end user can accomplish elementary end-user tasks without encountering anything different from machine to machine.