Apache is a free and open-source cross-platform web server software.
AppNexus is a cloud-based software platform that enables and optimizes programmatic online advertising.
Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.
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.
Ubuntu is a free and open-source operating system on Linux for the enterprise server, desktop, cloud, and IoT.