Simple Image Panner is a free jQuery plugin that lets you pan and zoom in on large images that are confined inside smaller containers
Zoom Slider is a simple content slider with depth-like zoom functionality.
Each slide has a predefined zoom area that will be used to calculate the appropriate scale value for a fullscreen fill. Once the icon for zooming is clicked, the zoom area as well as the page get scaled, creating the illusion that the viewer is approaching the item
zoomwall.js is a content-focused photo gallery using a horizontal masonry layout that scales up in lightbox mode.
Featured Image Zoomer lets you view a magnified portion of any image upon moving your mouse over it.
A magnifying area appears alongside the image displaying the magnified image on demand. The user can toggle the zoom level by using the mousewheel.
Zoom.js is jQuery plugin for image zoom. It's the best way to zoom an image. It transition/zooms in really cleanly..
bigpicture.js is a library that allows infinite panning and infinite zooming in HTML pages.
jQuery.imageView is a jQuery plugin that can help you to make image viewing with zoom.
iScroll can handle any element that needs to be moved with user interaction. It adds scrolling, zooming, panning, infinite scrolling, parallax scrolling, carousels to your projects and manages to do that in just 4kb. Give it a broom and it will also clean up your office.
Zoomerang.js is a drop-in library that allows your users to zoom in on (almost) any element on your existing page. It works even if you resize or scroll your page.
Smoothproducts is a simple, lightweight and responsive product image viewer using jQuery.
EasyZoom is an elegant, highly optimised jQuery image zoom and panning plugin supports touch-enabled devices and is easily customisable with CSS.
Ion.Zoom is an easy image lightbox jQuery plugin for small galleries. Allow to zoom images at place. Also supprort keyboard controls with ESC, LEFT and RIGHT button. Supports multiple independently operating galleries in one page. Works on touch screen devices (iPhone, iPad, etc.).