BackTrack 4 logo

1024 × 768

Linux Logo on Textured Background

1280 × 800

BackTrack 5 logo on red background

2560 × 1600

BackTrack 4 logo

1680 × 1050

Backtrack 5 logo

1920 × 1080

BackTrack 5 logo

1920 × 1200

Red Hat Linux logo

1600 × 1200

Ubuntu Logo on Digital Background — Orange, Energetic

1600 × 900

Debian logo on red background

1920 × 1080

Ubuntu Logo — Orange, Glowing

1440 × 900

Kubuntu Logo on Abstract Background

1920 × 1200

Ubuntu Logo with Flames — Brown

2560 × 1600