Searching for new goodies for creating game, came across this gem: Spriter
A powerful tool hides behind the simple name, watch the tut vids and weep tears of joy.
Seems I may have jumped the gun on this one. I recently discovered a new tool, created for spriting an online final fantasy tactics clone but adaptable to other sprite types.
It can be used to turn this spritesheet:
input
Into these frames:
output
It does this using a .xml file that tells it the configuration of the input spritesheet; It currently supports 6, I think, different Final Fantasy Tactics-styled sprites, a few effects, and is still undergoing developement and improvement. You can find the tool here, and I suggest you read the thread in its entireity.
It runs under windows or linux with wine, but screenshots are not a possibility right now as one of the large windows flickers too much =_=