Apache is a free and open-source cross-platform web server software.
Google AdSense is a program run by Google through which website publishers serve advertisements that are targeted to the site content and audience.
Google Analytics is a free web analytics service that tracks and reports website traffic.
Google Optimize allows you to test variants of web pages and see how they perform.
ipstack is a real-time IP to geolocation API capable of looking at location data and assessing security threats originating from risky IP addresses.
PHP is a general-purpose scripting language used for web development.