Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jade, coffee, css, less, ... and your custom stuff.
Version of the QueryLoader by Gaya Design. Preload images with ease.
Pilpil - Progressive Image Loading
Loads images, scripts, styles, iframes, videos and audio asynchronously.
Lazy load XT is a jQuery plugin for images, videos and other media
pushState + ajax = pjax
PxLoader is a simple JavasScript library for creating preloaders and resource downloaders for HTML5 apps.
Load modules on demand (lazy load) in AngularJS
A Module Loader for the Web
Very lightweight progress bars. No jQuery