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

Yoast SEO is a search engine optimisation plugin for WordPress and other platforms.

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.

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.

Sites using the WordPress Block Editor, also known as Gutenberg.

MySQL is an open-source relational database management system.

Spectra is a WordPress plugin that provides a collection of new and enhanced blocks for the WordPress Block editor.

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.