Emacs as default init, shell, window manager and "desktop" environment. Emacs has a reimplementation of almost all basic shell commands [1][2], in eshell. You get a unix style shell that works in windows too.

[1] http://www.gnu.org/software/emacs/manual/html_mono/eshell.ht...

[2] http://www.masteringemacs.org/articles/2010/12/13/complete-g...

>Emacs is next to worthless without all those userspace utilities

GNU/Emacs?