Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.

Query Migrate is a javascript library that allows you to preserve the compatibility of your jQuery code developed for versions of jQuery older than 1.9.

WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. Features include a plugin architecture and a template system.

PHP is a general-purpose scripting language used for web development.

W3 Total Cache (W3TC) improves the SEO and increases website performance and reducing load times by leveraging features like content delivery network (CDN) integration and the latest best practices.

jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.

MySQL is an open-source relational database management system.

Divi is a WordPress Theme and standalone WordPress plugin from Elegant themes that allows users to build websites using the visual drag-and-drop Divi page builder.