Some user friendly dropdown menu generators for your navigation menu with responsive layout support is introduced here. These are not the essential tools for building menus but these will give you head start for your menu design with optimized code. Later you can alter the menus with minimal effort as this gui tools are designed to speed up menu design.
Stay tuned for future updates with new css dropdown menu generators as i have only added some modern day menu makers as i think there is a lack of menu generator tools these days. Let me know if you have found any similar tools which is worth while working with.
Responsive Drop Down Menu Maker
Build your menus online with this amazing tool which will let you preview the code, live menu display and even let you export the designed menu to a zip file. The left side of the tool will let you create new menu items and you have complete control of drag and drop to place the items wherever you want them to be. Adding unlimited submenus is possible and the result is responsive to display the menu properly in mobile and tablet devices as well.
The background color of the menu bar can be changed with the online live tool itself so that we can see the result right away. Set your home element active and make links open in new windows if you require that option as well. You can modify the total width of the main menu and its sub menus along with the font size, color, text hover effects etc.Source
GenieMenu – Responsive Menu Generator
A premium product for generating dropdown menu on a mobile device with ease. This jQuery plugin takes your desktop menu and makes it suitable for responsive mobile devices. The menu is well optimized for small screens with great performance. You can control the color theme, background effect and even add transitions to menu while dropdown.Demo | Source
CSS3 Menu Maker
A software with free version which can be utilized to create custom menu designs with unlimited dropdown layers is very user friendly to work with. The premium version has many more templates to choose from other that you can alter the code if necessary for a desired effect once the basic outline is setup with this free menu software. Supporting all major browser versions and mobile platforms this software also has a better GUI to create menus easily.