Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
Mod_python is an Apache HTTP Server module that integrates the Python programming language with the server. It is intended to provide a Python language binding for the Apache HTTP Server.
PHP is a general-purpose scripting language used for web development.
Python is an interpreted and general-purpose programming language.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.