jQuery fatNav is a chubby fullscreen menu with nice hamburger toggle.
SlickNav is a responsive mobile menu plugin for jQuery.
slimMenu is a lightweight jQuery plugin, which is made to create responsive and multi-level navigation menus on the fly.
Side Toggle Menu lets you add a side bar menu to your page that slides in from the left or right edge of the browser window. It supports two types of unveiling- either by nudging the rest of the page and making room for itself, or overlaying the page.
CSS3 transitions are used to power the animation, ensuring a smooth visual experience even on low powered mobile devices. And speaking of mobile devices, the menus are adaptive in that it automatically switches to a basic drop down menu using a toggle button at the top of the page when the user's device width is 480px or less.
jQuery Navobile is a jQuery plugin that makes mobile navigation easy. Navobile uses CSS to apply CSS3 translations, Mobile device detection and fixing the position of nav.