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.
Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
Google Analytics is a free web analytics service that tracks and reports website traffic.
React is an open-source JavaScript library for building user interfaces or UI components.
Stripe offers online payment processing for internet businesses as well as fraud prevention, invoicing and subscription management.