HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
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.
WhatsApp Business is a free to download app available on Android and iPhone using which businesses can connect with their customers.