Multicolr Search Lab : We extracted the colors from 20 million Creative Commons images on Flickr to make the images searchable by color.
Trimage (lossless) image compressor : Trimage is a cross-platform GUI and command-line interface to optimize image files via optipng, pngcrush, advpng and jpegoptim
Vector Magic : Easily Convert Bitmap Images To Clean Vector Art
Automatically convert bitmap images like JPEGs, GIFs and PNGs to the crisp, clean, scalable vector ar...
Copyscape : Website Plagiarism Search - Web Site Content Copyright Protection
Sourcegraph : Sourcegraph Server is a free, self-hosted code search server that integrates with your code host and supports multi-repository, regexp, and diff searc...
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 there is a higher resolution version.