Phototype, a client/server-side image manipulation library, supports all kinds of image manipulations. On the serverside the library is powered by combination of PHP/GD that renders the image, on the clientside Prototype is used. With Phototype, you are able to rotate, resize, flip and do some other cool effects to images. One could compare this to swIFR, but then redone with PHP/GD instead of Flash 🙂