Magnific Popup - The greater part of Lightbox modules will completely preload a picture before showing it.
Visily - The easiest and most powerful wireframe software for agile teams.
LightGallery - A modern, electron and nodejs based image viewer for Mac, Windows and Linux.
Prynt - Turn your smartphone into a Polaroid
jQuery Lightbox - jQuery Lightbox plugins are utilized to showcase images and other web stuff using modal dialogs.
Pressgram - The best way to filter & publish photos to WordPress.