cdnjs is a free distributed JS library delivery service.
Clicky is web an analytics tool which helps you to get real-time analysis including spy view.
Google Analytics is a free web analytics service that tracks and reports website traffic.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Mapbox.js is a JavaScript library provided by Mapbox for working with interactive maps and geospatial data.
Pure CSS is a set of small, responsive CSS modules that can be used in web projects.
Progressive Web Apps (PWAs) are web apps built and enhanced with modern APIs to deliver enhanced capabilities, reliability, and installability while reaching anyone, anywhere, on any device, all with a single codebase.