WebODF is a JavaScript library that makes it easy to add Open Document Format (ODF) support to your website and to your mobile or desktop application. It uses HTML and CSS to display ODF documents.
Artisan JS a javascript Canvas Library
Advanced Javascript ColorPicker
Fancy checkboxes and radio buttons with CSS jQuery
JSL (JavaScript Loader)
CSS3-Powered Presentation Framework : Impress.js
Adapt.js – Adaptive CSS
Keyboard JS – Library for binding to keys or key combos
Javascript mark & share utility : MASHA
Javascript media Veiwer : Shadowbox.js
Colors: JavaScript Color Library
JSZip: Create .zip files with JavaScript
JavaScript currency converter : Money.js
cssQuery()
Javascript CanvasLoader Creator
Use Reveal.js to Create CSS 3D Slideshow
JavaScript Preloader for HTML5 Apps : PxLoader
JavaScript PDF Reader : pdf.js
Javascript Turn HTML Tables Into Advanced Editable Components : EditableGrid
Javascript Driven HTML5 Video Player: Dplayer
Javascript thumbnail and media viewer : Highslide JS
Open Source Javascript Charting Library – gRaphael
Use CSS4 parent selector right now with cssParentSelector.js
JavaScript library to zip and unzip files : Zip.js
Clipping JPEGs Freely With JavaScript : polyClip.js
Dracula : JavaScript Graph Library
Adaptive Images with php and javascript
List.js – Add search, sort and flexibility to plain HTML lists with jQuery
Add automatic area highlighting to image Maps with javascript : Mapper.js
Timeplot : Web Widget for Plotting Time Series Graph
Simile Widgets : JavaScript Interactive Timeline
Kalendae : A framework agnostic javascript date picker
EpicEditor : An embeddable JavaScript markdown editor
Leaflet : JavaScript library for mobile-friendly interactive maps
sigma.js : A lightweight JavaScript graph drawing library with Demo
CamanJS : Image Manipulation in Javascript with example
Dragdealer JS : JavaScript 2D drag and Tap Plugin with Demo
TinyBox2 : JavaScript Modal Windows with Demo
MathJax : JavaScript Display engine for Mathematics with Demo
Drag and Drop table content with JavaScript
RGraph: HTML5 Javascript charts library
Fixie.js : Automatically adds filler content to HTML documents
firstImpression.js: A micro-library for detecting new visitors
Cubism.js : Time Series Visualization Chart
Sprite3D.js : JavaScript library for manipulating CSS 3D transforms
simpleCart(js) – Javascript Shopping Cart
Build Desktop Apps using HTML, CSS and JS: AppJS
Pixastic: JavaScript Image Processing Library
Respond.js : Fast CSS3 Media Queries for Internet Explorer 6-8
screenfull.js : JavaScript Fullscreen API
SelectNav.js :Responsive Drop-Down menu in JavaScript
AliceJS : A Independent CSS Engine for high-end visual effects
Google Places API – practice
Seahorse : JavaScript library of Form validation
JavaScript Mindmap
dygraphs JavaScript Visualization Library
zoom.js : JS API for Zooming in on Specific Points
D3.js : Data-Driven Documents
EaselJS : JavaScript Library to makes work with HTML5 Canvas element easy
CSS 3D Image Gallery with JavaScript
Pull Off Awesome Scroll Effects With Stroll.js
Flickrshow : Simple Javascript slideshow for Flickr
cssFx : Inserts vendor prefixes for CSS3 properties
Mousetrap : Keyboard shortcuts in Javascript
Creating a Slider Control with the HTML5 Range Input and JavaScript
BetweenJS API : JS tweening engine
sizeit.js : A javascript helper for responsive web design
Downloadify : Download text files without server interaction with js library
Bookflip : JavaScript Page Turn effects
EpicEditor : An embeddable JavaScript Markdown editor
Gauge.js : 100% native and cool looking animated JavaScript gauge