ImageGlass - You can use Image to view your digital images and photos of many different formats.
Magnific Popup - The greater part of Lightbox modules will completely preload a picture before showing it.
IrfanView - IrfanView ... one of the most popular viewers worldwide.
LightGallery - A modern, electron and nodejs based image viewer for Mac, Windows and Linux.
FreeVimager - Free & Fast Image Viewer and Editor for Windows.
jQuery Lightbox - jQuery Lightbox plugins are utilized to showcase images and other web stuff using modal dialogs.