Retrobatch - Retrobatch is a unique application for automating actions to tens, hundreds, and even thousands of images at the same time
IrfanView - IrfanView ... one of the most popular viewers worldwide.
AYVY - JPEG/PNG/RAW Images viewer
Universal Viewer - Universal Viewer is an advanced file viewer for wide range of formats. Supported file formats are:
NX Studio - Nikon | Imaging Products | Software
FastStone Image Viewer - FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.