Material is an Responsive Admin Panel Template built using Angular and Bootstrap. The theme is inspired by Google Material Design concept so is the name. Theme features five color purple, orange, red, blue and green.
Travel is a free Responsive e-commerce AMP HTML template designed for Trip Booking, Hotel Reservation, Adventure Planning or Tour Guide websites like Booking.com or Expedia.com
This responsive Multi Level Dropdown Navigation Menu is built with Bootstrap 4.1 and available on Github.
Pushy is a Responsive Off Canvas jQuery Multilevel Navigation menu. Pushy is cross browser and even support the annoying Internet Explorer. Menu positions are adjustable.
stickup is a responsive jQuery plugin that can pin the navigation menu on top of the page. It is specifically designed for single page websites, but it can be re purpose for any type of website.