Gimp

The Gimp is a free image editor similar to Adobe Photoshop. The Gimp is equipped with a wide verity of professional tools allowing you to retouch, enhance and manipulate digital images. Many plug-ins are available that extend the Gimp's capabilities.

Recommended Plug-ins

• Save for web allows you to switch between file formats and quality settings quickly so that you can find optimal setting for your images.
• Image subdivide will divide an image in x amount of Rows and Columns.
• GimpPublishr will allow you to quickly publish your images to Flickr or Picasa web album.
• Photo effects is a collection of image effect scripts. Includes: Cartoon, Color pencil, Conte crayon, Cutout, Drawing, Inkpen, Note Paper, Paint dot image, Palette knife, Pastel, Stamp, Water paint effect, (plastic) Wrap effect. Angled strokes, Crosshatched, Chrome image, Cross light, Funky color, Soft focus, Sola.
• Digital Infrared will make your image look like a B&W infrared image.

Find more plug-ins at GIMP Plugin Registry.