JSS is an authoring tool for CSS which allows you to use JavaScript to describe styles in a declarative, conflict-free and reusable way.
MUI(formerly Material UI) is a simple and customisable component library to build faster, beautiful, and more accessible React applications.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Plausible is an open-source alternative to Google Analytics.