Download: SpriteStudio_v1.0.RAR - Windows 32-bit version only available, Mac OS & UNIX versions coming soon
Edit multiple images simultaneously:

Export your images to ready-to-use C source code:

Highlights:
* Nice graphical interface
* Supports lots of your favorite image file types: JPEG, GIF, BMP, TGA, PNG, TIFF, PCX, etc.
* 2/3 buffer & 3/4 color modes
* Maximize efficiency by right clicking on the canvas to cycle through the gray palette rather than slowly browsing through one
* Zoom In/Zoom Out
-> Afraid that you can't use your sprite because it's a weird size? (23 x 43 pixels for example?) Don't worry!

-> Image exceeds 128x64 pixels? Don't worry! SpriteStudio will scale it down for you.
-> Want to change the size parameters of the image? Simply clicking the Ruler icon will do it for you.
Tell me if you guys get it running okay on your systems. This program has been tested to work on Windows XP Home running on a 300MHz AMD K6 and 32MB RAM. Feedback and suggestions are welcome.