Apache is a free and open-source cross-platform web server software.
cdnjs is a free distributed JS library delivery service.
A multi-dimensional charting library built to work natively with crossfilter and rendered using d3.js
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Popper is a positioning engine, its purpose is to calculate the position of an element to make it possible to position it near a given reference element.
TYPO3 is a free and open-source Web content management system written in PHP.