Apache is a free and open-source cross-platform web server software.
CakePHP is an open-source web framework. It follows the model–view–controller (MVC) approach and is written in PHP.
JSDelivr is a free public CDN for open-source projects. It can serve web files directly from the npm registry and GitHub repositories without any configuration.
Open Graph is a protocol that is used to integrate any web page into the social graph.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.