SageThumbs - SageThumbs is a powerful shell extension allowing to preview enormous amount of image formats...
TinyPNG - Make your website faster and save bandwidth. TinyPNG optimizes your PNG images by 50-80% while preserving full transparency!
ThumbView - ThumbView enables image thumbnails and tooltips in Microsoft Windows XP Explorer (does not work on...
ImageOptim - Faster web pages and apps.
Icaros - Icaros is a collection of lightweight, high quality, Windows Shell Extensions
TinyJPG - Compress JPEG images with perfect quality and file size