1)   DS Thumbnail Generator 1.0
DS Thumbnail Generator allows you to create multiple thumbnails from any image type. It is very easy to use and allows you to make thumbnails from multiple images at once, in order to save time.

 2)   Photo Shaman 1.2.2
PhotoShaman is a great tool for generating stylized thumbnails for image galleries and photo albums with picture frame, bevel, mask and other effects. Handy realtime preview. Multiple CPU support. Custom styles and much more.