DDoS-Guard is a Russian Internet infrastructure company which provides DDoS protection, content delivery network services, and web hosting services.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Open Graph is a protocol that is used to integrate any web page into the social graph.
OpenCart is a free and open-source ecommerce platform used for creating and managing online stores. It is written in PHP and uses a MySQL database to store information.
PHP is a general-purpose scripting language used for web development.