DoneJS is an open-source JavaScript framework designed for building high-performance, real-time web applications. It provides developers with a robust set of tools and best practices to streamline the development process, particularly for creating single-page applications (SPAs) that require fast and dynamic user interfaces. DoneJS is built on top of popular technologies such as CanJS, StealJS, and Node.js, offering features like code sharing between server and client, easy set-up for progressive web apps, and automatic build optimizations. The framework aims to improve productivity and maintainability by encouraging modularity and reusability in code.