Apache is a free and open-source cross-platform web server software.
GetResponse is an email marketing app that allows you to create a mailing list and capture data onto it.
Google Optimize allows you to test variants of web pages and see how they perform.
Open Graph is a protocol that is used to integrate any web page into the social graph.
PayPal is an online payments system that supports online money transfers and serves as an electronic alternative to traditional paper methods like checks and money orders.
PHP is a general-purpose scripting language used for web development.
Shopware is an enterprise-level ecommerce platform.
Trusted Shops is a company that acts as a 3'rd party representing the common interests of both consumers and retailers.