Expo is a framework and a platform for universal React applications. It is a set of tools and services built around React Native and native platforms that help you develop, build, deploy, and quickly iterate on iOS, Android, and web apps from the same JavaScript/TypeScript codebase.

Fluid Framework is a collection of client libraries for building distributed, real-time collaborative web applications. These libraries allow multiple clients to simultaneously create and operate on shared data structures using coding patterns similar to those used to work with local data.

Deno is a simple, modern and secure runtime for JavaScript and TypeScript that uses V8 and is built in Rust.