Restive.js is a designer-friendly jQuery toolkit for building mobile-friendly websites.
Using a combination of smart device detection, advanced breakpoints management, and timely CSS class additions, restive.js will make it easier for you to build mobile-friendly and/or responsive Web pages.
Elastic Slider is a photo slider that is working on desktop and mobile browsers.
jQuery-Rebox is a simple, lightweight, responsive and mobile friendly jQuery lightbox plugin.It's simple and do not require any images.
jQuery lightGallery is a lightweight jQuery lightbox gallery for displaying image and video gallery.
nanoGALLERY is a touch enabled and responsive image gallery with justified, cascading and grid layout. It supports self hosted images and pulling in Flickr, Picasa, Google+ and SmugMug photo albums.
Leaflet is designed with simplicity, performance and usability in mind. It works efficiently across all major desktop and mobile platforms out of the box, taking advantage of HTML5 and CSS3 on modern browsers while still being accessible on older ones.
It can be extended with many plugins, has a easy to use and well-documented API and a simple, readable source code.