herbyCookie is an easy jQuery plugin asking at user for cookie allowing a website to comply with the EU cookie law.
jQuery.cookie is a simple, lightweight jQuery plugin for reading, writing and deleting cookies
jCookies, a jQuery plugin, makes getting and settings HTTP Cookies a breeze. jCookies allows the storage of any type of data: strings, arrays, objects, etc. Data is stored in the cookie as JSON data. Also you can retrieve data using server side code such as C# and PHP.