XnView MP - XnView is a free software that allows you to view, resize and edit your images. It supports more than 500 different formats!
Pixave - The ultimate image organizer for the Mac.
IrfanView - IrfanView ... one of the most popular viewers worldwide.
Eagle App - Unify your creative inspiration in one place. Store anything – inspiring images, design mockups, illustrations, screenshots and more.
JPEGView - JPEGView is a small and fast viewer/editor for JPEG, BMP, PNG, GIF and TIFF images.
EagleFiler - EagleFiler makes managing your information easy.