Express is a web application framework for Node.js, released as free and open-source software under the MIT License. It is designed for building web applications and APIs.
Matomo Analytics is a free and open-source web analytics application, that runs on a PHP/MySQL web-server.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Nuxt is a Vue framework for developing modern web applications.