Enquire.js
Awesome Media Queries in JavaScript
Zoom.js
zoom in on any element in the DOM
Mootools Core
MooTools Core Repository
Handorgel
Accessible W3C conform accordion written in ES6.
Rando.js
The world's easiest, most powerful random function.
Gator
Event delegation in Javascript
Phantomjs
Scriptable Headless WebKit
Html
A simple, extensible way to work directly with the DOM.
Bespoke.js
DIY Presentation Micro-Framework
Fastdom
Eliminates layout thrashing by batching DOM read/write operations
Design Blocks
A set of 170+ Bootstrap based design blocks ready to be used to create clean modern websites.
Responsive Comments
A client-side solution to conditional loading.
Mag.js
MagJS - Modular Application Glue
Tapestry5 jQuery
Tapestry 5 jQuery integration. Fully replace Prototype and Scriptaculous with jQuery with as less as possible compatibility issues
Shuffle
jQuery Shuffle Plugin
State
Hierarchical finite state machine for TypeScript and JavaScript
Minified.js
Replace jQuery or MooTools with a <4kB Library