Blazy
bLazy is a lightweight lazy loading and multi-serving image script. It's written in JavaScript why it doesn't have any dependencies for 3rd party libraries like jQuery. bLazy is working in all modern browser including IE7+.
Balloon.css
Simple tooltips made of pure CSS
Angular Tooltips
Angularjs tooltips module, add tooltips to your elements
Absurd
Writing your CSS in JavaScript. That's it!
Roughdraft.js
Quickly create an interactive HTML mock-up by auto sourcing lorem ipsum/images generators, with minimal html markup, and no server side code
jQuery Textcomplete
Introduce autocompleting power to textareas, like GitHub comment forms have.
jQuery
jQuery JavaScript Library
Wysiwyg Editor
A flat designed jQuery WYSIWYG text editor based on HTML5, free only for non-commercial projects. For commercial applications you have to purchase a license from
Timeline JS
TimelineJS: A Storytelling Timeline built in JavaScript.
Signal R
Incredibly simple real-time web for .NET
Rando.js
The world's easiest, most powerful random function.
Pdfmake
Client/server side PDF printing in pure JavaScript
Html2canvas
Screenshots with JavaScript
HTML5shiv
This script is the defacto way to enable use of HTML5 sectioning elements in legacy Internet Explorer.
Fuse
Lightweight fuzzy-search, in JavaScript
Chartkick
Create beautiful Javascript charts with one line of Ruby
Anypixel
AnyPixel.js is an open-source software and hardware library that makes it possible to use the web to create big, unusual, interactive displays.