cdnjs is a free distributed JS library delivery service.
Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Popper is a positioning engine, its purpose is to calculate the position of an element to make it possible to position it near a given reference element.
Swiper is a JavaScript library that creates modern touch sliders with hardware-accelerated transitions.
Tippy.js is the complete tooltip, popover, dropdown, and menu solution for the web, powered by Popper.