Responsive Menu is a simple WordPress plugin that allows you to convert your current theme menu into a mobile ready, fully W3C compliant responsive design in seconds.
NEX-Forms is a high quality and simple to use drag and drop/single click form creator offering a wide range of customizability, flexibility, design and usability that will make online form building a walk in the park. Do you have a need to easily create and customize professional and awesome looking forms on your WordPress website?...This forms builder is the one you need! Demo: http://codecanyon.net/item/nexforms-the-ultimate-wordpress-form-builder/7103891
Instantify by DaftPlug is a AIO plugin that combines Progressive Web Apps, Google AMP and Facebook Instant Articles and work them together to achieve amazing preformance and user experience on every possible platform. Plugin is compatible with any WP configuration. You have controll on every setting and with powerfull admin panel. Demo: https://codecanyon.net/item/instantify-progressive-web-apps-google-amp-facebook-instant-articles-for-wordpress/25757693