Stoppers: You seemed to be suggesting that it mandated a UNIX-like file system. It doesn't have to use a network protocol, it can use shared memory or a plethora of other IPC systems. It does offer cut-and-paste, there are dozens of different choices for video systems (from overlay, direct framebuffer manipulation, etc). Passing temporary files between processes in such a way is a sign of bad design, IMO. (Especially given you could send the data via IPC). X can quite happily sit in 16MB of RAM; there was plenty of memory left over on the PDA prototype we demonstrated at Wakefield, for example; and that only had 128MB of RAM. Most of its usage on desktops are for the plethora of modules and such it can have loaded. It still seems like you have a lot of preconceptions about X that simply aren't true, and are ignoring all of its huge advantages. Of course, it's your project - you can do what you want.