big-endian vs. little-endian

ITS vs. Unix

Unix vs. VMS

BSD Unix vs. System V

C vs. Pascal

C vs. FORTRAN

KDE vs. GNOME

vim vs. elvis

Linux vs. [Free|Net|Open]BSD

EMACS vs. vi

GUI vs. CLI

gnome, xforce, KDE...
wmii, i3wm ... ......

my personal computer vs.: everyone else’s personal computer