Cowboy is a small, fast, modular HTTP server written in Erlang.
Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
Google Optimize allows you to test variants of web pages and see how they perform.
Heroku is a cloud platform as a service (PaaS) supporting several programming languages.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Lucky Orange is a conversion optimisation tool with features including heatmaps, session recording, conversion funnels, form analytics, and chat.
Ruby on Rails is a server-side web application framework written in Ruby under the MIT License.