Best jQuery/JavaScript plugins to create awesome responsive menu navigation for Responsive web design.

MeanMenu
Most useful plugin to create horizontal responsive menu navigation.
Demo Download

Responsive Nav (JavaScript)
Tiny JavaScript plugin to create responsive navigation. It provide fast touch screen support.
Demo Download

Sidr
Best plugin to create responsive side (sidebar) menus.
Download

Navgoco
Simple jQuery plugin to create multi-level vertical slide navigation.
Demo Download

FlexNav
jQuery plugin to create responsive navigation.
Demo Download

SmartMenus
JQuery website navigation plugin to create list based navigation & mega menus.
Demo Download

jQuery-menu-aim
Best tool to create amazon like drop down menus.
Demo Download

Side Toggle Menu
Best plugin to create slide toggle menus.

jQuery slimMenu
Light weight jQuery plugin to create responsive multi level navigation.
Demo Download

jPanelMenu
Plugin to create panel styled navigation like Google & Facebook mobile version navigation.
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Flaunt.js
Another plugin to create stylish responsive navigation.
Demo Download

Naver
Responsive navigation plugin.
Demo Download

TinyNav.js
Tiny jQuery plugin to create mobile friendly navigation.
Demo Download

Responsive-Menu
It turn site navigation into dropdown when you are in mobile.
Demo Download

HorizontalNav
It turn full width horizontal menu into container.
Demo Download

jQuery.mmenu
Best Plugin to create app look-alike sliding menus.
Demo Download

SelectNav.js (JavaScript)
JavaScript plugin to convert website navigation into a select drop-down menu.
Demo Download

Responsive Mobile Menu
Demo Download

slimMenu
Lightweight jQuery plugin to create responsive multi level nested menus.
Demo Download