BlocksIt.js is a jQuery plugin for creating dynamic grid layout. It manages to convert HTML elements into 'blocks' and position them in well-arranged grid layout like Pinterest. It allows join of 2 or more blocks into a big block element.  

Primer undercoats your CSS by pulling out all of your classes and id's and placing them into a starter stylesheet.  

Datepicker is a date picking plugin for Bootstrap. You can add datepicker picker to field or to any other element.   Datepicker - Features: can be used as a component formats: dd, d, mm, m, yyyy, yy separators: -, /, .  

MapQuery is a jQuery plugin that you can use to add mapping to your website. Whether you quickly want to add a simple map to a page, or build a feature rich web application, MapQuery is just the thing you need.  

jQuery.balloon is a jQuery plugin to add balloon tips to elements. It's user-friendly, fine-tunable and without css and images.   jQuery.balloon - Features: Without css and images. Easy to apply to a website. Edge of balloon tip is placed on optimized position. Can be styled by both script and css. Fast even if the page has many balloons, because only add event handler when the document is ready. Any HTML and jQuery object as contents. User-friendly API. Fine-tunable position, animation

FormHelp is a jQuery utility plugin providing contextual help on input fields in a form. FormHelp provides contextual help in a standard HTML form requires all kinds of extra HTML and CSS (and JavaScript if you want it to play nice with the user). This plugin gives you an easy way to place contextual help at every input field in a form. All you have to do is insert a span element with the helptext and a reference to the corresponding input field and this plugin does the heavy work for you.  

slideControl is a jQuery plugin that allows you to easily make sliders for range inputs.  

rcarousel is a continuous jQuery UI carousel.   rcarousel - Features: simple to use It's very simple to use. Just add some elements into a container and run the widget on it! highly customizable does not force you to use one pre-defined theme. You can add your own custom navigation with no effort! many options to choose from There are many options to choose from. Configure your carousel whatever you like! Any element You can use hopefully any HTML element inside a carousel.  image

Tabslet is a jQuery plugin for tabs, is compatible with IE7+, Chrome, Firefox, Safari and supports custom events, rotation, animation and controls.   Tabslet - Features: Change tabs on mouse over Use animation effect for tabs' changing Ability to use either href or alt attribute to target tab Rotation Controls Custom events  

TimeTo is a jQuery timer countdown digital clock plugin.