Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Open Graph is a protocol that is used to integrate any web page into the social graph.
OXID eShop Professional Edition is an e-ommerce platform for both small start-up companies and experience online retailers with a wide range of functions, software maintenance and support.
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.