Jpeg Enhancer 

An advanced application that lets you remove the artifacts and a blotchy look from your images, making them look as if saved with a 100% ("super-fine") quality. Based on advanced science-intensive technology, it is a must-have graphics tool for all.
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BetterJPEG 

BetterJPEG is a JPEG editor specifically designed to avoid recompression loss when editing and resaving photos. Rotation, flip, crop, red eye removal, date/text/EXIF data imprint and more. Batch processing of images.
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JPEG Lossless Resave Photoshop Plug-in 

Better JPEG Lossless Resave plug-in for Adobe Photoshop is a tool designed to avoid recompression loss when editing and resaving JPEG images in Photoshop.
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