Fragment.js
A tiny tool for easily loading html fragments and templates
Eqcss
EQCSS is a plugin that introduces Element Queries, Scoped CSS, a Parent selector, and responsive JavaScript to all browsers IE8 and up
Elements
E+lements is a minimal DOM Library for the prime framework.
Chartkick
Create beautiful Javascript charts with one line of Ruby
Alasql
AlaSQL.js - JavaScript SQL database for browser and Node.js. Handles both traditional relational tables and nested JSON data (NoSQL). Export, store, and import data from localStorage, IndexedDB, or Excel.
Animo.js
A powerful little tool for managing CSS animations
Drawingboard.js
A canvas based drawing app that you can integrate easily on your website.
jQuery Dynatable
A more-fun, semantic, alternative to datatables
Swig
Take a swig of the best template engine for JavaScript.
Readmore.js
A lightweight jQuery plugin for collapsing and expanding long blocks of text with "Read more" and "Close" links.
Porthole
A proxy to safely communicate to cross-domain iframes in javascript
No Ui Slider
noUiSlider is a lightweight JavaScript range slider library. It offers a wide selection of options and settings, and is compatible with a ton of (touch) devices, including those running iOS, Android, Windows 8 and Windows Phone 8.
JayData
JayData is a unified data access library for JavaScript to CRUD data from different sources like WebSQL/SQLite, IndexedDB, MongoDb, ASP.NET WebAPI, OData, HTML5 localStorage, Facebook or YQL. The library can be integrated with KendoUI, Knockout.js, Handlebars.js or Sencha Touch 2 and can be used on Node.js as well.
Anijs
Declarative handling library for CSS animations.
Hydra.js
Create a scalable, maintainable and module oriented system using Hydra.js
Jscritic
Quickly check how well 3rd party script behaves.
Flow Js
Javascript Library for Multi-step Asynchronous Logic