Apache is a free and open-source cross-platform web server software.
Google Hosted Libraries is a stable, reliable, high-speed, globally available content distribution network for the most popular, open-source JavaScript libraries.
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 WooCommerce gives you the ability to automatically sync customer purchase data to your MailChimp account.
Open Graph is a protocol that is used to integrate any web page into the social graph.
WooCommerce Subscriptions primarily allows you to create and sell subscription products from your WooCommerce shop.
WooCommerce is an open-source ecommerce plugin for WordPress.
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.