The editor runs inside a Framework called Electron, which is basically a sandboxed version of the Chrome browser. It's fully open-source, and free, and all of the Source Code for it is available on GitHub. Even though it's created by Microsoft, Linux and Mac users have embraced it as well. It's easily one of the most configurable, developer-friendly editors available. Since its introduction, Visual Studio Code, often called simply 'VS Code', has quickly moved to the top of editor choices by programmers.