Why is vs code open source

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Last updated: April 8, 2026

Quick Answer: Visual Studio Code is open source because Microsoft released it under the MIT License in April 2015 to foster community collaboration and rapid innovation. This licensing allows developers worldwide to freely use, modify, and distribute the code, which has led to over 50,000 extensions created by the community. By making it open source, Microsoft benefits from external contributions that enhance features like debugging and IntelliSense, while maintaining a separate proprietary version called Visual Studio for enterprise needs.

Key Facts

Released under MIT License in April 2015
Over 50,000 extensions available as of 2023
Built on Electron framework using web technologies
Microsoft maintains separate proprietary Visual Studio IDE
GitHub repository has over 150,000 stars

Overview

Visual Studio Code (VS Code) is a free, open-source code editor developed by Microsoft, first announced on April 29, 2015, at the Build conference. Unlike Microsoft's proprietary Visual Studio IDE, VS Code was designed from the ground up to be lightweight, cross-platform, and extensible. The decision to make it open source was strategic: Microsoft wanted to create a tool that could compete with popular editors like Sublime Text and Atom while leveraging community contributions. The editor is built on the Electron framework, which allows it to run on Windows, macOS, and Linux using web technologies like HTML, CSS, and JavaScript. Since its release, VS Code has grown exponentially, becoming one of the most popular development tools globally, with millions of active users. Its open-source nature has enabled rapid iteration, with monthly updates that incorporate user feedback and community patches.

How It Works

VS Code operates as an open-source project through a transparent development process hosted on GitHub, where its source code is publicly available under the permissive MIT License. This license allows anyone to use, modify, and distribute the software without restrictions, encouraging widespread adoption and contribution. The editor's core functionality includes syntax highlighting, debugging, and Git integration, but its extensibility is key: developers can create extensions using TypeScript or JavaScript to add new languages, themes, and tools. Microsoft manages the project with a core team that reviews pull requests and maintains quality, while external contributors submit code for features like language support or performance improvements. The build process uses Node.js and npm for dependencies, and releases are automated through continuous integration pipelines. This open model enables rapid bug fixes and feature additions, such as the Live Share extension for real-time collaboration, which was developed with community input.

Why It Matters

VS Code's open-source approach matters because it democratizes software development, providing a high-quality, free tool that lowers barriers for programmers worldwide. It has significantly impacted the developer ecosystem by standardizing features like IntelliSense code completion and integrated terminals, which are now expected in modern editors. The vast extension marketplace, with over 50,000 options, allows customization for diverse workflows, from web development to data science. This openness fosters innovation, as seen in community-driven projects like remote development extensions that enable coding on servers or containers. Economically, it supports a thriving ecosystem of extension developers and educators, while strategically, it helps Microsoft attract developers to its cloud services like Azure. By being open source, VS Code ensures transparency and trust, avoiding vendor lock-in and promoting interoperability across platforms.