Alexa Certified Site Metrics is an analytics service wich monitors and analyses web traffic and can be used to keep track of user behavior.
Apache is a free and open-source cross-platform web server software.
Constant Contact is a marketing automation and email marketing solution.
Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
Fathom is easy-yet-powerful website analytics that protects digital privacy.
Google Analytics is a free web analytics service that tracks and reports website traffic.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Pinterest is an image sharing and social media service designed to enable saving and discovery of information.