Dynatree is a JavaScript dynamic tree view plugin for jQuery with support for persistence, keyboard, checkboxes, drag'n'drop, and lazy loading.   Dynatree - Features: Optimized for large dynamic trees (DOM elements are only created when really needed). Programmable through a rich object oriented interface. Support for lazy loading and Ajax. Checkboxes and hierarchical selection. Supports drag and drop. Support for persistence. Keyboard aware. Initializes from HTML code, JSON, or JavaSc

Flexisel is the responsive image carousel with options specifically available for adapting the carousel for mobile and tablet devices, it will adapt responsively as the screen width gets smaller.  

Timeago is a jQuery plugin that makes it easy to support automatically updating fuzzy timestamps (e.g. "4 minutes ago" or "about 1 day ago") from ISO 8601 formatted dates and times embedded in your HTML.   Timeago - Features: Avoid timestamps dated "1 minute ago" even though the page was opened 10 minutes ago; timeago refreshes automatically. You can take full advantage of page caching in your web applications, because the timestamps aren't calculated on the server. You get to use microform

jTPS is a datatable jQuery plugin that offers pagination, animated scrolling through pages and intelligent natural sorting capability. And it supports attachment to generic pre-built tables from conventional HTML and/or template driven HTML tables.   

SelectBoxIt is a jQuery plugin that progressively enhances an HTML Select Box into a single option dropdown list. The dropdown list can be optionally styled with Twitter Bootstrap, jQueryUI ThemeRoller, or jQuery Mobile, optionally animated with jQueryUI show/hide effects, and works on Desktop, Tablet, and Mobile browsers.   SelectBoxIt - Features: Styleable with Twitter Bootstrap, jQueryUI Themeroller, and jQuery Mobile Supports Desktop, Tablet, and Mobile browsers Supports all jQuery and

formatter.js formats html inputs to match a specified pattern.  

Tocify is a jQuery plugin that dynamically generates a table of contents. Tocify can be optionally styled with Twitter Bootstrap or jQueryUI Themeroller, and optionally animated with jQuery show/hide effects. Tocify also optionally provides support for smooth scrolling, scroll highlighting, scroll page extending, and forward and back button support.  

TimeCircles is a jQuery plugin that provides a nice looking way to either count down towards a certain time, or to count up from a certain time. The goal for TimeCircles is to provide a simple yet dynamic tool that makes it very easy to provide visitors an attractive countdown or timer.  

Minimalect is a select replacement plugin for jQuery.   Minimalect - Features: Replace select elements with a nicer styled control Support for optgroups Filtering choices by typing Keyboard navigation Support for themes  

EZ-CSS is an easy to use and lightweight CSS framework. It is a browser-friendly solution to build any type of CSS layouts. And it makes you create complex layouts easily.   EZ-CSS - Features: has a very small footprint for a fast download time facilitates deep nesting (because it does not use descendant selectors) allows you create multiple columns of any width, with or without a gutter lets you apply any width you want to containers and gutters is framework agnostic (it integrates well