HoneyView Viewer - HoneyView is a fast and lightweight image viewer that supports various formats, including JPG, BMP, GIF, PNG, PSD, DDS, UFO, and ICNS.
Tiff Viewer by Tiff Tools - Tiff Viewer by Tiff Tools is the perfect solution if you’re looking for an effective and user-friendly way to view TIFF files.
pic view - A simple picture viewer and manipulator. Open source (CBuilder 5). Features: - Slideshow
WildBit Viewer - WildBit viewer is a compact and fast image viewer with a slide show and editor.
ReaViewer - ReaViewer is the perfect software for viewing image files of all types.
JPEGView - JPEGView is a small and fast viewer/editor for JPEG, BMP, PNG, GIF and TIFF images.