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.
Helix Ultimate a free template framework for Joomla.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Joomla is a free and open-source content management system for publishing web content.
LiteSpeed is a high-scalability web server.
Mailchimp is a marketing automation platform and email marketing service.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.