Apache is a free and open-source cross-platform web server software.
Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Django is a Python-based free and open-source web application framework.
Phusion Passenger is a free web server and application server with support for Ruby, Python and Node.js.
SweetAlert2 is a JavaScript library that provides customisable, visually appealing, and responsive alert and modal dialog boxes for web applications.
Swiper is a JavaScript library that creates modern touch sliders with hardware-accelerated transitions.