ImageOptim - Faster web pages and apps.
ImageAlpha - ImageAlpha is a GUI for pngnq and pngquant.
jStrip - jStrip is a free tool to reduce the file size of JPEG images without sacrificing image quality.
SqueezeFile - squeeze your files to different dimension.
AdvanceCOMP - Play MAME on your TV Arcade Monitor or Fixed Frequency Monitor
Optimage - Advanced image optimization tool