Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
HubSpot is a marketing and sales software that helps companies attract visitors, convert leads, and close customers.
jQuery CDN is a way to include jQuery in your website without actually downloading and keeping it your website's folder.
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.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Wistia is designed exclusively to serve companies using video on their websites for marketing, support, and sales.