Fancybox - fancyapps.com - Fancy App Store
PhotoSwipe - JavaScript gallery, no dependencies.
Lightbox 2 - Lightbox is a simple, unobtrusive script used to overlay images on the current page.
Magnific Popup - The greater part of Lightbox modules will completely preload a picture before showing it.
lightgallery.js - Full featured javascript lightbox gallery, No dependencies.
Shadowbox - Shadowbox.js is a plugin that has user-friendly functions and allows to view media files like images, gif, video on the current page in the full dimensions