rari is a React Server Components framework that runs on a Rust runtime, offering significant performance improvements over traditional frameworks like Next.js. It features a three-layer architecture: a Rust runtime that includes an HTTP server, a React framework with app routing and server actions, and a build toolchain for bundling and type checking. The framework allows developers to write standard React code while leveraging Rust’s speed and efficiency. With rari, applications can achieve 46.5 times higher throughput and 9.1 times faster response times compared to Next.js. Key features include a file-based app router, true server-side rendering with instant hydration, and automatic loading states during navigation. The framework supports hot module reloading for quick development feedback and offers zero-configuration setup with pre-built binaries. It fully embraces TypeScript, providing type safety across server and client boundaries, and works across macOS, Linux, and Windows. Benchmarks show that rari processes requests at an average of 0.43 milliseconds, compared to Next.js's 3.92 milliseconds. It also delivers a 53% smaller bundle size and achieves 3.7 times faster build times. The documentation provides extensive resources, including getting started guides, deployment optimization tips, and detailed explanations of server and client components. The community is encouraged to contribute by reporting bugs, suggesting features, or improving documentation. rari is backed by companies like Neon, which offers serverless Postgres solutions, and operates under the MIT License.