Apache is a free and open-source cross-platform web server software.
Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Debian is a Linux software which is a free open-source software.
PHP is a general-purpose scripting language used for web development.
RequireJS is a JavaScript library and file loader which manages the dependencies between JavaScript files and in modular programming.
Trusted Shops is a company that acts as a 3'rd party representing the common interests of both consumers and retailers.