Swipe
a lightweight mobile slider
Syntax Highlighter
SyntaxHighlighter is a fully functional self-contained code syntax highlighter developed in JavaScript.
String Score
JavaScript string ranking 0 for no match upto 1 for perfect... "String".score("str"); //=> 0.825
Stats.js
JavaScript Performance Monitor
Stapes
a (really) tiny Javascript MVC microframework
Spine
Lightweight MVC library for building JavaScript applications
Socket.io
Realtime application framework for Node.JS, with HTML5 WebSockets and cross-browser fallbacks support.
Spin.js
A spinning activity indicator
SockJS Client
WebSocket emulation - Javascript client
Simplecart
A simple javascript shopping cart that easily integrates with your current website.
Sizzle
A sizzlin' hot selector engine.
Showdown
JavaScript port of Markdown
Selectivizr
Selectivizr is a JavaScript utility that emulates CSS3 pseudo-classes and attribute selectors in Internet Explorer 6-8.
Script.js
Asyncronous JavaScript loader and dependency manager
Sammy
Sammy is a tiny javascript framework built on top of jQuery, It's RESTful Evented Javascript.
Rickshaw
JavaScript toolkit for creating interactive real-time graphs
Responsive Slides
Simple & lightweight responsive slider plugin (in 1kb)