Apache is a free and open-source cross-platform web server software.
Jetpack Boost – Website Speed, Performance and Critical CSS.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.
ShareThis provides free engagement and growth tools (e.g., share buttons, follow buttons, and reaction buttons) for site owners.
W3 Total Cache (W3TC) improves the SEO and increases website performance and reducing load times by leveraging features like content delivery network (CDN) integration and the latest best practices.
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.