Everyone Loves Screenshots!

GNU/Linux Screenshots

Linux Fullscreen
GIMP running fullscreen, side by side with F-Spot.
Linux Mixer
Full control over B/W process using the channel mixer.
Digital artwork
Digital artwork from scratch in GIMP.

Microsoft Windows Screenshots

GIMP on Microsoft Windows
GIMP running on Microsoft Windows features a widget theme mimicking the native environment.

Mac OS X Screenshots

GIMP on the Mac
GIMP side by side with Apple Aperture on Mac OS X.