Apache is a free and open-source cross-platform web server software.
Debian is a Linux software which is a free open-source software.
Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
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.
Statamic is an open-source and self-hosted content management system based on the PHP programming language.
Typekit is an online service which offers a subscription library of fonts.