Here are few good (and some great) jQuery plug-ins that can boost your next proejct.
Set and get cookies with jQuery.
There are lots of them, but this one is good in terms of the set of features.
http://jquery.malsup.com/cycle/ Slideshow plugin that supports many different types of transition effects.
Another option (simpler) is jCarousel:
http://sorgalla.com/jcarousel/ Control a list of items in horizontal or vertical order.
Date Range Picker
Built on jQuery UI. You might want to use it only if the ‘default’ jQuery UI widget is not enough for you.
Simple & cool animation: http://lab.smashup.it/flip/
Flip your elements in four directions.
Allows you to easily and unobtrusively upgrade HTML forms to use AJAX.
Hotkeys: Keyboard Bindings
http://code.google.com/p/js-hotkeys/ if you want your web app to be ‘reachable’ using keyboard – this is your plugin: Add and remove handlers for keyboard events anywhere in your code supporting almost any key combination.
Allows a user to more easily enter fixed width input where you would like them to enter the data in a certain format (dates,phone numbers, etc).
A quick and easy way to add image cropping functionality to your web application
jGrowl: Messaging System
Unobtrusive messages within the browser, similar to the way that OS X’s Growl Framework works
Represent and manipulate tabular data on the web.
Create any UI look you want – from simple headers or sidebars, to a complex application with toolbars, menus, help-panels, status bars, sub-forms, etc.
Allows you to turn any textarea into a markup editor.
Extract metadata from classes, random attributes, child elements and HTML5 data-* attributes.
Popeye: Inline Gallery
An advanced image gallery used to save space when displaying a collection of images and offer your users a nice and elegant way to show a big version of your images without leaving the page flow.
Quicksand: Animated Filtering
Reorder and filter items with a nice shuffling animation.
A small, customizable plugin for scrolling elements, or the window itself.
Adds spellcheck support to inputs. It uses Google’s spell checking API and requires a server to handle the communication with the API. An example php implementation is provided.
Creates a non-obstrusive star rating control based on a set of radio input boxes.
Turn standard HTML table with THEAD and TBODY tags into a sortable table without page refreshes.
Uniform masks your standard form controls with custom themed controls.
Add client-side validation to your forms.