ImageGlass - You can use Image to view your digital images and photos of many different formats.
Fancybox - fancyapps.com - Fancy App Store
Fragment - A powerful image viewing suite with advanced metadata info
PhotoSwipe - JavaScript gallery, no dependencies.
Universal Viewer - Universal Viewer is an advanced file viewer for wide range of formats. Supported file formats are:
Magnific Popup - The greater part of Lightbox modules will completely preload a picture before showing it.