Mac OS X Lion logo

1920 × 1200

Mac OS X logo display

1024 × 768

Mac Os X Lion Logo — Gray

1600 × 900

Lion and OS X logo

1920 × 1080

Mac OS X logo with circuit board

1600 × 1200

Windows Operating System

1280 × 800

Apple logo with penguin and other icons

1024 × 768

Windows 7 Logo — Black, Minimalist, Digital Art, Text, Gray, Blue, Windows 7

1920 × 1080

Windows 8 Logo — Gray, Neutral, Digital Art, Text, Red

1920 × 1200

Windows 8 Logo — Red, Vibrant, Digital Art, Text

1440 × 900

Windows 8 Logo — Red, Vibrant, Digital Art

1920 × 1080

Ubuntu Logo on Black — Minimalist, Digital Art, Gray

1920 × 1200