Google Analytics is a free web analytics service that tracks and reports website traffic.
Mapbox GL JS is a JavaScript library that uses WebGL to render interactive maps from vector tiles and Mapbox styles.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Open Graph is a protocol that is used to integrate any web page into the social graph.
PHP is a general-purpose scripting language used for web development.
Swiper is a JavaScript library that creates modern touch sliders with hardware-accelerated transitions.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.