LABjs
Loading And Blocking JavaScript: On-demand parallel loader for JavaScript with execution order dependencies
Script.js
Asyncronous JavaScript loader and dependency manager
Webpack
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.
Java Script Load Image
JavaScript Load Image is a library to load images provided as File or Blob objects or via URL. It returns an optionally scaled and/or cropped HTML img or canvas element. It also provides a method to parse image meta data to extract Exif tags and thumbnails and to restore the complete image header after resizing.
Pilpil
Pilpil - Progressive Image Loading
Layzr.js
A small, fast, modern, and dependency-free library for lazy loading.
Almond
A minimal AMD API implementation for use after optimized builds
jQuery Pjax
pushState + ajax = pjax
Sea.js
A Module Loader for the Web
Queue
Yet another asynchronous helper library for JavaScript. 387 bytes minified and gzipped!
Nanobar
Very lightweight progress bars. No jQuery
Oc Lazy Load
Load modules on demand (lazy load) in AngularJS
Lozad.js
🔥 Highly performant, light ~0.9kb and configurable lazy loader in pure JS with no dependencies for responsive images, iframes and more
Lazyload
Tiny, dependency-free async JavaScript and CSS loader.
Lazysizes
High performance and SEO friendly lazy loader for images (responsive and normal), iframes and more, that detects any visibility changes triggered through user interaction, CSS or JavaScript without configuration.
Aload
Loads images, scripts, styles, iframes, videos and audio asynchronously.
Px Loader
PxLoader is a simple JavasScript library for creating preloaders and resource downloaders for HTML5 apps.