jQuery Smartify loads images, calls Ajax, plays with css classes in on demand, while element is/or becoming visible in device Viewport. It's replacement of jQuery Lazyload.
responsivelyLazy is a nice lazy loading implementation that is responsive, truly lazy and SEO friendly.
Layzr.js is a small, fast, modern, and dependency-free library for lazy loading images.
Tada is a lightweight, no dependency library for lazy image load. jQuery plugin is also provided. Duplicate element check, throttled scroll handler, percent threshold supported.
A tiny jQuery plugin for lazy-loading Google Maps.
lazyFade.js is a jQuery plugin that fades a row of elements with a lazy effect. The fade of each next element gets delayed slightly what gives a precious touch to the whole transition.
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.
lazysizes is a fast lazyloader for images (including responsive images), iframes and scripts/widgets without any dependency. It may become also your number one tool to integrate responsive images.
Lazyload Any is a jQuery plugin provides a lazyload function for images, videos, iframe or anything.
stalactite is a jQuery plugin that slowly and lazily packs the contents of an element.
Unlike most packing libraries that try to do all the math and sorting up front, stalactite takes a lazy approach and sorts each child element sequentially. This can add a sense of curation as it makes your viewer aware of the browser's decisions.