GIMP is the GNU Image Manipulation Program. It is a freely distributed piece of software for such tasks as photo retouching, image composition and image authoring. It works on many operating systems: GNU/Linux (i386, PPC), Microsoft Windows (XP, Vista), Mac OS X, Sun OpenSolaris, and FreeBSD. Available in many languages.

GIMP Details:

• Image Manipulation Tool
• File size: 16.1 MB
• Operating System: Windows (other systems)
• Customizable Interface
• Photo Enhancement
• Digital Retouching
• Support ranges from the common file format likes of JPEG (JFIF), GIF, PNG, TIFF to special use formats such as the multi-resolution and multi-color-depth Windows icon files

GIMP