Highlighter.js
Easily navigate the DOM and highlight the elements - http://720kb.github.io/highlighter.js/
Gfx
CSS3 3D animation library
Extract Values
A simple helper to extract values from a string based on a pattern.
Flash JS
JavaScript graphics and games engine with API familiar to Flash one. Just look to examples sources.
jQuery Snipe
jQuery plugin to add a sniper-lens-style zoom on images
Jquery Waypoints
Waypoints is a small jQuery plugin that makes it easy to execute a function whenever you scroll to an element.
jStorage
jStorage is a simple key/value database to store data on browser side. As a bonus it is also a local pubsub platform to sync data between tabs/windows
jQuery.simple Weather
A simple jQuery plugin to display current weather data for any location and doesn't get in your way. Now supports HTML5 GeoLocation!
X3dom
X3DOM. A framework for integrating and manipulating X3D scenes as HTML5/DOM elements.
Wholly
jQuery plugin used to select the entire table row and column in response to mouseenter and mouseleave events. Wholly supports table layouts that utilize colspan and rowspan.
Veinjs
Injects CSS into the document (it's a perfectly legal procedure)
Timer.js
Timer.js is a periodic timer for Node.js and the browser.
Simplate
A simple, but powerful, templating engine for JavaScript.
Set Dom
📑 Lightweight dom diffing with plain old html.
Resize Observer
Polyfills the ResizeObserver API.
Readmore.js
A lightweight jQuery plugin for collapsing and expanding long blocks of text with "Read more" and "Close" links.
Parsimmon
A monadic LL(infinity) parser combinator library for javascript