Google APIs are application programming interfaces developed by Google which allow communication with Google Services and their integration to other services.
nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.
PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.
Website using the € symbol on their website - meaning it may accept payment in Euros.
Google's hosted library for web fonts. Allows websites to choose and use fonts from a free, wide variety of fonts.