Express is a web application framework for Node.js, released as free and open-source software under the MIT License. It is designed for building web applications and APIs.

Node.js is an open-source, cross-platform, JavaScript runtime environment that executes JavaScript code outside a web browser.

Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.

React is an open-source JavaScript library for building user interfaces or UI components.

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.

Gatsby is a React-based open-source framework with performance, scalability and security built-in.

Webpack is an open-source JavaScript module bundler.

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.