Hugin
Stitching multiple images into one large image is an art form. Even with the best image stitching tools it takes a great deal of practice to get good at creating panoramas that look realistic. While a few tools purport to do this seamlessly (pun intended), all of them require some work to master image stitching. Hugin offers a similar steep learning curve, with a stunning payoff once you get the hang of it. By defining control points on each image, you precisely determined the connecting points of two or more photos in forming one larger image. The app works with Windows Mac OS X and Linux, making it a cross-platform image stitching tool. If you've ever captured several shots of the perfect landscape or cityscape, but haven't found the right app to combine them altogether,Hugin may be just the solution you are looking for. [Windows 9x/2k/XP Mac OS X $0.00]