Many of the wallpapers are available in sizes all the way down to 320x240, so if you find a multi-monitor wallpaper you love for bank of monitors you may be able to find it for your cellphone too.

This is the avengers Wallpaper. Wallpaper of 1600 × 900 corresponded to single to triple monitors. High resolution wallpapers are also available and you can also find things for iPhone and iPad.

External displays for laptops have moved beyond single standalone devices. FOPO's "triple" dual-screen portable monitor looks like a road warrior's dream -- but make sure it fits and you bring ...