ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
ImageGlass - You can use Image to view your digital images and photos of many different formats.
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
Phiewer - Image Viewer - Phiewer is the easiest and fastest way to view your images, videos and even audio files.
Ralpha Image Resizer - High-speed image batch conversion tool
IrfanView - IrfanView ... one of the most popular viewers worldwide.