Xee - Xee lets you easily browse and manage images on your Mac. Browse images within folders and archives, move and copy them right in the app.
Fragment - A powerful image viewing suite with advanced metadata info
Imgseek - imgSeek is a collection of free open source projects for searching a collection of images using...
ImageGlass - You can use Image to view your digital images and photos of many different formats.
XnView MP - XnView is a free software that allows you to view, resize and edit your images. It supports more than 500 different formats!
Phiewer - Image Viewer - Phiewer is the easiest and fastest way to view your images, videos and even audio files.