Others have mentioned printers and older terminals that supported 80 and 132 column modes. That bled into other things. Like, for example, Gnome's terminal a

Others have mentioned printers and older terminals that supported 80 and 132 column modes. That bled into other things. Like, for example, Gnome's terminal app has a couple of 132 column settings as selectable presets. Also, the framebuffer/vga console in Linux (and probably other OSes) can be set into a 132 column mode. It's an official "VESA mode" also.