GatsbyJS is a free and open-source static site generator based on React. It uses a modern development stack including Webpack, GraphQL, and modern JavaScript and CSS frameworks. It also provides a rich set of plugins, starters, and themes.

Next.js is a React-based web framework that enables server-side rendering, static site generation, and other powerful features for building modern web applications.

React is a widely used JavaScript library for building user interfaces and single-page applications. It follows a component-based architecture and uses a virtual DOM to efficiently update and render UI components

Ecommerce websites sell products or services to customers through an online storefront. These websites typically include features such as product listings, shopping carts, payment processing, and order management tools.