jsOnlyLightbox is a responsive lightbox written in plain JavaScript.
Viewer.js is a customizable JavaScript image viewer.
Features
ScalableLightbox is a jQuery plugin for building aesthetically minimalistic, responsive picture lightboxes. Features an index module for providing an overview with thumbnails as well as a lightbox module, for displaying high-res images in a responsive manner.
bLazy is a lightweight lazy loading image script. It lets you lazy load and multi-serve your images so you can save bandwidth and server requests. The user will have faster load times and save data loaded if he/she doesn't browse the whole page.
Instagram Lite is a simple, lightweight jQuery plugin used to display a user's Instagram photos.
Image Cropper is a jQuery image cropping plugin with preview and some options.
Panorama Viewer is a jQuery plugin to Embed interactive panorama photos on your site.
A jQuery plugin to display your Google Photos, including Picasa and Google+ albums. Any album you want to display with this plugin must be marked for 'Public' sharing from Google.
There is a WordPress plugin available for jQuery googleslides.
Unveil is a jQuery plugin which is lightweight version of Lazy Load plugin. Unveil has support for serving high-resolution images to devices with retina displays and it less than 1k<.
PicStrips adds a little style to your images to help them stand out from the crowd. You can split your images into any number of strips, specify the whitespace between each strip and also the amount of vertical whitespace added at the top and bottom of alternate strips.
A simple jQuery plugin to show a list of Instagram photos.
jFlickrFeed Plugin makes it easy to pull Flickr feeds and display them on your site.