Free image editing apps, alternative to commercial products

Without going into the many reasons to explore alternative Image Editing Programs, I have created a list of programs that I feel are worth checking out. In the case of all these programs, they are free. As more people use the programs, the developers have greater incentive to continue their development. So, if you like them be sure to spread the word.

Free Photo Editing alternatives:

GIMP – from the official site, “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, in many languages.”

GIMPSHOP – a distribution of GIMP with an interface that is designed to emulate that of Photoshop

paint.net – Windows only photo editing program

CinePaint – Linux only photo editing program – supports up to 32 bits per
channel

Free Raw Converter alternatives:

Hasseblad Phocus - a free very powerful RAW converter as well as TIFF and JPEG editor. Mac only.

Raw Therapee – a full featured stand alone RAW file converter powered by Dave Coffin’s dcraw

UFRaw - Unidentified Flying Raw – a full featured standalone and GIMP plugin RAW converter powered by Dave Coffin’s dcraw

Scarab Darkroom - new to the scene, I haven't had time to play with it yet. Windows only.

Picassa - Google's free image editor - Its editing features are limited, but it shines as a poor man's data asset management application. It creates and saves thumbnails of all your images to facilitate their location. Also a really simple way of getting a gallery of images online if you use the Web Gallery feature which is also free up to a certain amount of space. It also supports RAW files, again via Dave Coffin’s dcraw

Free Digital Painting alternatives:

ArtWeaver - my favorite - very simple program with a clever, interface
Art Rage 2.5
Pixarra Twisted Brush

Vector Illustration alternative:
Inkscape -I have had students produce some really great working using this.

Free Page Layout alternative:
Scribus

Free Panorama software

Microsoft ICE - a really fantastic panorama assembly application. It is only runs on Windows machines.