European Union law state you must ask permission for cookies. This plugin handles that for you.
A plugin that provides a warning box with a ton more options completely re-written from the ground up.
This plugin uses AJAX & Thickbox to display a dialog based Content Warning to users, requiring them to acknolwedge they are at least 21 years old
Cookie Confirm allows you to easily insert a customisable notification for your users to choose and save their cookie preferences.