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

jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.

Cloudflare Browser Insights is a tool that measures the performance of websites from the perspective of users.

Sentry is an open-source platform for workflow productivity, aggregating errors from across the stack in real time.

Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.

Bootbox.js is a small JavaScript library which allows you to create custom modal dialogs using Bootstrap modals, without having to worry about creating, managing, or removing any of the required DOM elements or JavaScript event handlers.

SweetAlert is a JavaScript library that provides alternative alert and modal dialog boxes for web applications, with customisable features, aiming to improve the user interface of the default browser dialogs.

PHP is a general-purpose scripting language used for web development.