Lity is a ultra-lightweight, accessible and responsive lightbox plugin which supports images, iframes and inline content out of the box. It requires jQuery or Zepto
SmartPhoto.js is an easy to use responsive image viewer especially for mobile devices.
Lightbox is a simple lightbox script without dependencies.
ToxicBox is a jQuery lightbox plugin that displays pictures, containers, and notifications in a popup window.
Zoomify is a jQuery plugin for simple lightboxes with zoom effect.
Youtube Gallery Wall transforms a UL element containing links to Youtube videos into a "wall" of video thumbnails automatically. Moving your mouse over each thumbnail (or tapping on a mobile devices) gives you the option to play the video inside a lightbox.
A modern, lightbox style gallery for displaying images and YouTube videos on your site. The gallery interface is fully responsive and works beautifully across all devices big or small.
A lightbox gallery plugin for Bootstrap 3 based on the modal plugin. It supports images, YouTube videos, and galleries.
A great little lightbox script that is easy to implement and can be used for a variety of purposes.
Simple Lightbox is a touch-friendly image lightbox for mobile and desktop with jQuery.