SageThumbs - SageThumbs is a powerful shell extension allowing to preview enormous amount of image formats...
Optimage - Advanced image optimization tool
ThumbView - ThumbView enables image thumbnails and tooltips in Microsoft Windows XP Explorer (does not work on...
ImageOptim API - Web service for image compression
Icaros - Icaros is a collection of lightweight, high quality, Windows Shell Extensions
Imagify - Optimize and resize images online and through your CMS.