Ubuntu Logo — Black, Dramatic

1280 × 800

Windows 7 logo with light effects

1440 × 900

Windows 7 logo with light effects

1600 × 1000

Microsoft logo with light effects

1280 × 960

Microsoft logo with light effects

1600 × 1000

Windows 7 logo with light streaks

1680 × 1050

Windows 7 logo with light rays

1920 × 1080

Ubuntu Logo on Blue Background — Serene

2560 × 1440

purple apple logo with light effects

1680 × 1050

Linux penguins and DNA helix

1440 × 900

Ubuntu Logo on Textured Surface — Brown

1920 × 1080

Puppy Linux Logo — Yellow

1280 × 841