Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
Google PageSpeed is a family of tools designed to help websites performance optimisations.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Modernizr is a JavaScript library that detects the features available in a user's browser.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Swiper is a JavaScript library that creates modern touch sliders with hardware-accelerated transitions.