Apache is a free and open-source cross-platform web server software.
A multi-dimensional charting library built to work natively with crossfilter and rendered using d3.js
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Ruby on Rails is a server-side web application framework written in Ruby under the MIT License.
Ubuntu is a free and open-source operating system on Linux for the enterprise server, desktop, cloud, and IoT.