HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web.
Leaflet is the open-source JavaScript library for mobile-friendly interactive maps.
Math.js a JavaScript library that provides a comprehensive set of mathematical functions and capabilities for performing complex calculations and operations in web applications.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
PHP is a general-purpose scripting language used for web development.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.