Thumbelina is a very lightweight jQuery content slider designed for galleries of thumbnail images. It integrates well with other plugins, and is a perfect solution where too many thumbnails would clutter the page.
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.
It's free to use for personal or open source projects.
Lightbox is a simple lightbox script without dependencies.
Unite Gallery is a responsive jQuery image and video gallery plugin. This gallery is very powerfull, fast and has the most of nowdays must have features like responsiveness, touch enabled and even zoom feature, it's unique effect.
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.
Bootstrap Photo Gallery is a simple jQuery plugin that will create a Bootstrap based responsive Photo Gallery for your images.
Filterizr is a jQuery plugin that sorts, shuffles and applies stunning filters over responsive galleries using CSS3 transitions.
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.
xGallerify is a lightweight, responsive, smart gallery based on jQuery.