Minified.js
Replace jQuery or MooTools with a <4kB Library
Dataset
JavaScript library that makes managing the data behind client-side visualisations easy
Laxxx
Simple & light weight (3kb minified & zipped) vanilla javascript plugin to create smooth & beautiful animations when you scrolllll! Harness the power of the most intuitive interaction and make your websites come alive!
Ink
An HTML5/CSS3 framework used at SAPO for fast and efficient website design and prototyping
Amplify
AmplifyJS is a set of components for data management and application communication.
Polymer
Leverage the future of the web platform today.
Sound Manager 2
A JavaScript Sound API supporting MP3, MPEG4 and HTML5 audio + (experimental) RTMP, providing reliable cross-browser/platform audio control in as little as 10 KB. BSD licensed.
When
A solid, fast Promises/A+ and when() implementation, plus other async goodies.
Page.js
Micro client-side router inspired by the Express router (~1200 bytes)
Isotope
An exquisite jQuery plugin for magical layouts. Enables filtering, sorting, and dynamic layouts.
Balance Text
A jQuery plugin for implementing balancing of wrapping text in a web page
Autosize
jQuery plugin for dynamic textarea sizing
Animated Modal.js
animatedModal.js is a jQuery plugin to create a fullscreen modal with CSS3 transitions. you can use the transitions by animate.css or create yourself their transitions.
Forerunner Db
A JavaScript database with mongo-like query language, data-binding support, runs in the browser as a client-side DB or on the server via Node.js!
jQuery Smart Auto Complete
AutoComplete plugin with smart defaults and flexibility to customize
Baraja
Baraja is a jQuery plugin that allows to move elements in a card-like fashion and spread them like one would spread a deck of cards on a table.
Sea.js
A Module Loader for the Web