Apache is a free and open-source cross-platform web server software.
Elfsight is an all-in-one platform offering 70+ customisable widgets for websites.
Google Analytics is a free web analytics service that tracks and reports website traffic.
New Relic is a SaaS offering that focuses on performance and availability monitoring.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Phusion Passenger is a free web server and application server with support for Ruby, Python and Node.js.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.
Ruby on Rails is a server-side web application framework written in Ruby under the MIT License.