Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
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.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.
Twitter is a 'microblogging' system that allows you to send and receive short posts called tweets.
UIKit is the framework used for developing iOS applications.
Video.js is a JavaScript and CSS library that makes it easier to work with and build on HTML5 video.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.