Apache is a free and open-source cross-platform web server software.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
NextGEN Gallery is a WordPress gallery plugin maintained by Imagely.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Twenty Twenty-One is the default WordPress theme for 2021.
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.