Naoyuki Kanezawa and Guillermo Rauch, the CEO and Founder of Next.js, have made their framework for server-rendered universal JavaScript web applications open-source. The framework is built on top of React, Webpack, and Babel, and allows developers to create zero-configuration applications by using the file system as an API. Next.js enables automatic server rendering, code splitting, and data fetching, making it a powerful tool for building fast and scalable applications. The framework's design decisions prioritize flexibility, composability, and performance, with features such as CSS-in-JS and anticipation-driven deployment. By targeting V8's capabilities and embracing the React component contract, Next.js enables developers to create seamless interactions between server and client-side rendering, making it an attractive solution for building universal isomorphic applications. The framework's open-source nature allows developers to contribute to its development and explore future directions.