IrfanView - IrfanView ... one of the most popular viewers worldwide.
Retrobatch - Retrobatch is a unique application for automating actions to tens, hundreds, and even thousands of images at the same time
Universal Viewer - Universal Viewer is an advanced file viewer for wide range of formats. Supported file formats are:
photos2webgallery - Create lovely web galleries directly from macOS Photos app.
FastStone Image Viewer - FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.
Fragment - A powerful image viewing suite with advanced metadata info