As the following plugins are the top most best Mega Menus plugins with growing trend in wordpress themes. All the below mega menu plugins are 100% responsive and user friendly. Have a look and choose your own.
#1 WordPress Suppamenu
Here is a solution to get unlimited mega menus on the same page with wordpress suppamenu. This Plugin allows you to create unlimited mega menus with different sub menus. Note, this is an excellent responsive plugin which suits with entire devices.
#2 WR Mega Menu
WR Mega Menu is another super powerful and responsive plugin which has a complete control at designing and customization. There are lot of features such as drag and drop, unlimited colors, google fonts embedded etc. Check out the link for more details.
#3 Max Mega Menu
Max Mega Menu is a built in visual mega menu builder to create mega menus using widgets. To say about features, here also lot of features compared with the others, but here additionally coded with icons to menu items.
#4 Jquery vertical Mega Menu
This plugin looks like a vertical mega menus with flyout standard which can handle multiple menus on each page. Various animation effects included in this plugin which initiates show/hide, fade in or slide out.
#5 Jquery Mega Menu
This Mega Menu plugin allows you to add drop down mega menus from any standard wordpress custom menu using jquery.
#6 All in Menu
Now you can create as many as header menus from your wordpress site by choosing this new All in Menu plugin. You can customize or align already created menus from left to right or vice-versa. Its responsive also good in various devices.
#7 Cool Responsive Mega Menu
It’s an optional plugin with same above features but you can use wherever you need the menu by using wp_nav_menu replacing cool_nav_menu