Automatic.css is a CSS framework for WordPress page builders.
Bricks is a premium WordPress theme that lets you visually build performant WordPress sites.
Frames is a tool that allows you to create wireframes in real time, design and develop systems, and access a library of components to help you build custom websites quickly and easily, without any restrictions on your creative input.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Polylang is a WordPress plugin which allows you to create multilingual WordPress site.
Varnish is a reverse caching proxy.
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.