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...
Trimage (lossless) image compressor : Trimage is a cross-platform GUI and command-line interface to optimize image files via optipng, pngcrush, advpng and jpegoptim
Squoosh : Squoosh is an image compression web app that allows you to dive into the advanced options provided by various image compressors.