Apache is a free and open-source cross-platform web server software.
FreeBSD is a free and open-source Unix-like operating system.
Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
OpenSSL is a software library for applications that secure communications over computer networks against eavesdropping or need to identify the party at the other end.
PHP is a general-purpose scripting language used for web development.
TYPO3 is a free and open-source Web content management system written in PHP.