Apache is a free and open-source cross-platform web server software.
D3.js is a JavaScript library for producing dynamic, interactive data visualisations in web browsers.
Debian is a Linux software which is a free open-source software.
Google Web Toolkit (GWT) is an open-source Java software development framework that makes writing AJAX applications.
Java is a class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible.
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.
Unpkg is a content delivery network for everything on npm.