HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
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.
Leaflet is the open-source JavaScript library for mobile-friendly interactive maps.
Mapbox.js is a JavaScript library provided by Mapbox for working with interactive maps and geospatial data.
Matomo Analytics is a free and open-source web analytics application, that runs on a PHP/MySQL web-server.
Swiper is a JavaScript library that creates modern touch sliders with hardware-accelerated transitions.