Apache is a free and open-source cross-platform web server software.
GetResponse is an email marketing app that allows you to create a mailing list and capture data onto it.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. Features include a plugin architecture and a template system.