Ratchet
Prototype iPhone apps with simple HTML, CSS, and JS components.
PreloadJS
PreloadJS makes preloading assets & getting aggregate progress events easier in JavaScript. It uses XHR2 when available, and falls back to tag-based loading when not.
Objgrep
Find strings inside complicated javascript objects
Flex Slider
An awesome, fully responsive jQuery slider plugin
Curl
A small, fast module and resource loader with dependency management. (AMD, CommonJS Modules/1.1, CSS, HTML, etc.)
Nude.js
Nudity detection with JavaScript and HTMLCanvas
List
Do you want a 3 KB (gzipped&minified) cross-browser native JavaScript that makes your plain HTML lists and tables super flexible, searchable, sortable and filterable? Yeah! Do you also want the possibility to add, edit and remove items by dead simple templating? Hell yeah!
jQuery Timepicker
Adds a timepicker to jQueryUI Datepicker
jQuery Snipe
jQuery plugin to add a sniper-lens-style zoom on images
jQuery Impromptu
An extention to help provide a more pleasant way to spontaneously prompt a user for input.
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.
Avgrund
Avgrund is a jQuery plugin with new modal concept for popups
jPanelMenu
A jQuery plugin that creates a paneled-style menu (like the type seen in the mobile versions of Facebook and Google, as well as in many native iPhone applications).
JayData
JayData is a unified data access library for JavaScript to CRUD data from different sources like WebSQL/SQLite, IndexedDB, MongoDb, ASP.NET WebAPI, OData, HTML5 localStorage, Facebook or YQL. The library can be integrated with KendoUI, Knockout.js, Handlebars.js or Sencha Touch 2 and can be used on Node.js as well.
ifvisible.js
Checks if the current page is visible or not
Highcharts
Highcharts JS, the JavaScript charting framework
Heatmap.js
JavaScript Library for HTML5 canvas based heatmaps