Next.js is a popular open-source React framework for building server-side rendered, production ready web applications. It provides out-of-the-box performance optimizations, such as automatic code splitting and server-side rendering, and supports dynamic data fetching with minimal configuration.
Nuxt.js is a Vue.js framework designed to make server-side rendered (SSR) web applications easier to develop. It provides a simpler setup process, convenient debugging options, and many powerful features out of the box.