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

MySQL is an open-source relational database management system.

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.

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.

Redis is an in-memory data structure project implementing a distributed, in-memory key–value database with optional durability. Redis supports different kinds of abstract data structures, such as strings, lists, maps, sets, sorted sets, HyperLogLogs, bitmaps, streams, and spatial indexes.

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

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