Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
Flickity is a JavaScript slider library, built by David DeSandro of Metafizzy fame.
Google Analytics is a free web analytics service that tracks and reports website traffic.
Google Hosted Libraries is a stable, reliable, high-speed, globally available content distribution network for the most popular, open-source JavaScript libraries.
jQuery UI is a collection of GUI widgets, animated visual effects, and themes implemented with jQuery, Cascading Style Sheets, and HTML.
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.
MailChimp for WordPress is an email marketing plugin that enables you to build subscriber lists.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Optimizely is an experimentation platform that helps developers build and run A/B tests on websites.
WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. Features include a plugin architecture and a template system.
WP Engine is a website hosting provider.