This is a repackaged open source software product wherein additional charges apply for support. Deno is a modern runtime for executing JavaScript and TypeScript outside of the web browser. Created by Ryan Dahl, the original developer of Node.js, Deno addresses some of the design limitations and security concerns of its predecessor. Built on the V8 JavaScript engine and implemented in Rust, Deno offers a secure environment with a permission system, an extensive standard library, and first-class support for TypeScript. It emphasizes simplicity and productivity by providing built-in tools for testing, formatting, linting, and dependency management, eliminating the need for separate package managers like npm.