TinEye Reverse Image Search : TinEye is a reverse image search engine. It finds out where an image came from, how it is being used, if modified versions of the image exist, or if t...
RoundPic : Online tool for making anti-aliased rounded corners (very Web 2.0!) for avatars and images
JPGCrunk : jpgcrunk is a tool for crunking images.
WaveFunctionCollapse : Bitmap & tilemap generation from a single example with the help of ideas from quantum mechanics.