JavaScript & jQuery

Documentation

• JavaScript Patterns (http://shichuan.github.com/javascript-patterns, source at https://github.com/shichuan/javascript-patterns)

Common

• https://github.com/jquery/jquery (no comments)
• https://github.com/appendto/amplify (AmplifyJS is a set of components for data management and application communication)
• https://github.com/madrobby/zepto (Zepto.js is a minimalist JavaScript framework for modern browsers, with a jQuery-compatible API)
• https://github.com/documentcloud/underscore (JavaScript's utility _ belt)
• https://github.com/jashkenas/coffee-script (CoffeeScript)
• https://github.com/olivernn/supplement.js (A small collection of utility functions to make working with JavaScript that much sweeter and more expressive)
• https://github.com/alexyoung/turing.js (DailyJS's JavaScript framework)
• http://sammyjs.org (tiny javascript framework built on top of jQuery, It's RESTful Evented Javascript)
• https://github.com/Prinzhorn/jquery-inlog (See what your jQuery code does inside like a boss)
• https://github.com/codejoust/session.js (Get user session information)
• https://github.com/rvagg/traversty (A small, yet powerful utility making DOM traversal headache-free)
• https://github.com/scottjehl/Respond (A fast & lightweight polyfill for min/max-width CSS3 Media Queries (for IE 6-8, and more))
• https://github.com/vkiryukhin/pretty-data (plugin to pretty-print or minify data in XML, JSON and CSS formats)
• https://github.com/fgnass/spin.js (A spinning activity indicator)

Unit Testing

• https://github.com/jquery/qunit

MVC (or close to MVC) Frameworks

• https://github.com/elabs/serenade.js (Client side MVC framework)
• https://github.com/hay/stapes (a really tiny Javascript MVC microframework)
• https://github.com/arturadib/agility (Javascript MVC for the "write less, do more" programmer)
• https://github.com/documentcloud/backbone (Give your JS App some Backbone with Models, Views, Collections, and Events)
• https://github.com/kmalakoff/knockback (Knockback.js provides Knockout.js magic for Backbone.js Models and Collections)

Lightboxes (Cool Popups)

• https://github.com/fancyapps/fancyBox

Tooltips

• https://github.com/jamescryer/grumble.js (jQuery plugin to add 360 rotatable bubble style tooltips)

Forms

• https://github.com/recurly/recurly-js (Secure, PCI Compliant Transaction Forms With Fully Customizable CSS)
• https://github.com/remybach/jQuery.superLabels (Give your forms a helping of awesome!)

Paging

• https://github.com/luis-almeida/jPages

Zip

• https://github.com/gildas-lormeau/zip.js

Favicon

• https://github.com/makeable/Notificon (Favicon Notifications / Alerts)

Validations

• https://github.com/jzaefferer/jquery-validation
• https://github.com/rickharrison/validate.js (Lightweight JavaScript form validation library inspired by CodeIgniter)

Guiders (Feature Tours) on pages

• https://github.com/jeff-optimizely/Guiders-JS
• https://github.com/zurb/joyride

Markdown

• https://github.com/leeoniya/reMarked.js (client-side DOM > Markdown converter)

Sliders

• https://github.com/leongersen/noUiSlider (noUiSlider is a little jQuery plugin that turns an html object into a nice (range) slider. It can have two handles to select a range, a fixed minimum or maximum to select a limit, or just two handles to pick some points.)

Themes, UI Components, Boilerplates

• http://twitter.github.com/bootstrap (Simple and flexible HTML, CSS, and Javascript for popular user interface components and interactions)
• https://github.com/addyosmani/jquery-ui-bootstrap (A jQuery UI theme based on Twitter Bootstrap)
• https://github.com/commadelimited/jQuery-Mobile-Bootstrap-Theme (A jQuery Mobile theme based on Twitter Bootstrap)
• https://github.com/joshuagatcke/HTML-KickStart (really cool, ala Bootstrap)
• https://github.com/dhgamache/Skeleton (A Beautiful Boilerplate for Responsive, Mobile-Friendly Development)
• https://github.com/visionmedia/uikit (UIKit is a small (4kb minified / gzipped) collection of flexible, cohesive, decoupled components for the modern web. With an emphasis on structure-only styling making it simple to apply application specific styling. UIKit is not a replacement for larger UI frameworks, nor is it a CSS framework such as Bootstrap)

Grids

• https://github.com/jonikorpi/Golden-Grid-System (A folding grid for responsive design)

Bookmarklets

• https://github.com/sparkbox/mediaQueryBookmarklet (Determine current page dimensions and current media query)

Numbers, Money & Currency

• https://github.com/josscrowcroft/accounting.js (A lightweight JavaScript library for number, money and currency formatting - fully localisable, zero dependencies)
• https://github.com/josscrowcroft/money.js (currency conversion library, for web & nodeJS

Templates

• https://github.com/sstephenson/eco (Embedded CoffeeScript templates)
• https://github.com/wycats/handlebars.js (Handlebars.js is an extension to the Mustache templating language created by Chris Wanstrath. Handlebars.js and Mustache are both logicless templating languages that keep the view and the code separated like we all know they should be)
• https://github.com/janl/mustache.js (Minimal templating with {{mustaches}} in JavaScript)
• https://github.com/BorisMoore/jsrender (Next-generation jQuery Templates, optimized for high-performance pure string-based rendering, without DOM or jQuery dependency)
• https://github.com/BorisMoore/jsviews (Interactive data-driven views, built on top of JsRender templates)

Loaders & Client-side package managers

• https://github.com/ender-js/Ender (a full featured package manager for your browser)
• https://github.com/nemeseri/ender-overlay (Ender-overlay is a highly configurable overlay plugin for Ender. You can easily build your own gallery or other overlay based logic on the top of this plugin)
• https://github.com/nemeseri/ender-carousel (Ender-carousel is a simple carousel plugin for ender)
• https://github.com/rvagg/ender-bootstrap (Build tool to assemble Ender-compatible Twitter Bootstrap 2.0 JS packages)
• https://github.com/getify/LABjs
• https://github.com/SlexAxton/yepnope.js (An Asynchronous Conditional Resource Loader)

Presentations

• https://github.com/imakewebthings/deck.js
• https://github.com/bartaz/impress.js (It's a presentation framework based on the power of CSS3 transforms and transitions in modern browsers and inspired by the idea behind prezi.com)

SlideShows (Sliders)

• https://github.com/woothemes/FlexSlider
• https://github.com/nathansearles/Slides
• https://github.com/IanLunn/Sequence

Images & Videos

• https://github.com/davetayls/jquery.lazyLoader (Semantic, organic responsive images)
• https://github.com/aino/galleria (The JavaScript Image Gallery)
• https://github.com/desandro/masonry (The flip-side of CSS Floats. jQuery plugin that rearranges item elements to a grid)
• https://github.com/odyniec/imgareaselect (select specific image area)
• https://github.com/tuupola/jquery_lazyload (jQuery plugin for lazy loading images)
• https://github.com/blueimp/JavaScript-Load-Image (JavaScript Load Image is a function to load images provided as File or Blob objects or via URL. It returns an optionally scaled HTML img or canvas element)
• https://github.com/mozilla/popcorn-js (Mozilla's HTML5 Video Framework)

CSS3 Selector Engines, dynamic CSS and CSS Adapters

• https://github.com/cloudhead/less.js (The dynamic stylesheet language)
• https://github.com/nex3/sass (Sass makes CSS fun again)
• http://sizzlejs.com
• https://github.com/ded/qwery
• https://github.com/nathansmith/adapt (serves CSS based on screen width)

Mobile & Touch

• https://github.com/jairajs89/Touchy.js (A simple light-weight JavaScript library for dealing with touch events)
• https://github.com/phonegap/phonegap (access core functions on Android, iPhone and Blackberry using JavaScript)
• https://github.com/joehewitt/scrollability (Imitates iOS native scrolling in JavaScript)
• https://github.com/MattWilcox/Adaptive-Images (Automatically adapts your existing HTML images for mobile devices. No mark-up changes needed)

File Uploaders

• https://github.com/johnlanz/jquery-fileuploader
• https://github.com/valums/file-uploader
• https://github.com/filamentgroup/jQuery-Custom-File-Input
• https://github.com/moxiecode/plupload (Plupload is a JavaScript API for dealing with file uploads it supports features like multiple file selection, file type filtering, request chunking, client side image scaling and it uses different runtimes to achieve this such as HTML 5, Silverlight, Flash, Gears and BrowserPlus)
• https://github.com/blueimp/jQuery-File-Upload (File Upload widget with multiple file selection, drag&drop support, progress bars and preview images for jQuery. Supports cross-domain, chunked and resumable file uploads and client-side image resizing. Works with any server-side platform (PHP, Python, Ruby on Rails, Java, Node.js, Go etc.) that supports standard HTML form file uploads)
• https://github.com/23/resumable.js (A JavaScript library for providing multiple simultaneous, stable, fault-tolerant and resumable/restartable uploads via the HTML5 File API. Works currently ONLY in Chrome / Firefox)

Fonts & Typography

• https://github.com/davatron5000/FitText.js
• https://github.com/freqdec/slabText (jQuery plugin for producing big, bold & responsive headlines)

Tags & Mentions Plugins

• http://iplantideas.com/quicktag
• https://github.com/alexgorbatchev/jquery-textext
• https://github.com/podio/jquery-mentions-input
• https://github.com/hailwood/jQuery-Tagit (demo at http://webspirited.com/tagit, transforms an html unordered list into a unique tagging plugin)
• http://daniel-zahariev.github.com/jquery-textntags (allows you to "@tag" someone in a text message, just like you are used to on Facebook or Twitter)
• https://github.com/aehlke/tag-it

DropDowns Plugins

• http://jamielottering.github.com/DropKick
• https://github.com/harvesthq/chosen
• https://github.com/meltingice/ajax-chosen

Switch inputs

• https://github.com/rawnet/jquery-switch (A slide/toggle switch for jQuery)

QRCodes

• https://github.com/jeromeetienne/jquery-qrcode
• https://github.com/Gottox/jQR

Star Rating plugins

• https://github.com/wbotelhos/raty (A Star Rating Plugin)
• http://www.fyneworks.com/jquery/star-rating

Editing plugins

• https://github.com/bergie/create (new editing interface, inline etc)
• https://github.com/fastrd/youRhere (demo at http://yourhere.gandtblog.com, give your readers a chance to mark their article reading- progress by just clicking it)
• https://github.com/tuupola/jquery_jeditable
• http://digitalbush.com/projects/masked-input-plugin
• https://github.com/akaihola/jquery-autogrow
• https://github.com/davatron5000/Lettering.js
• http://polarblau.github.com/suggest (simple Auto-suggest)
• https://github.com/tristandunn/jquery-auto-geocoder (automatically geocode and display a location entered in a text field)

Search Box plugins

• http://documentcloud.github.com/visualsearch
• https://github.com/remybach/jQuery.slashSearch (This plugin allows you to give focus to the search field by typing the '/' (forward-slash) key)

Effects

• https://github.com/markdalgleish/stellar.js (Stellar.js - Parallax scrolling made easy)
• http://lab.smashup.it/flip (flip easily your elements in four directions)
• https://github.com/jackrugile/jRumble (umbles, vibrates, shakes, and rotates any element you choose)
• https://github.com/hakimel/zoom.js (zoom in on any element in the DOM)
• https://github.com/blasten/turn.js (page flip effect for HTML5)

Graph plugins

• https://github.com/mbostock/d3 (A JavaScript visualization library for HTML and SVG)
• https://github.com/samizdatco/arbor
• https://github.com/jondot/graphene (Graphene is a realtime dashboard & graphing toolkit based on D3 and Backbone)