Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.

Ruby is an open-source object-oriented programming language.

Google Maps is a web mapping service. It offers satellite imagery, aerial photography, street maps, 360° interactive panoramic views of streets, real-time traffic conditions, and route planning for traveling by foot, car, bicycle and air, or public transportation.

Phusion Passenger is a free web server and application server with support for Ruby, Python and Node.js.

Ruby on Rails is a server-side web application framework written in Ruby under the MIT License.