Microsoft Open-Sources New Command-Line Editor, GitHub Copilot in VS Code, and Windows Subsystem for Linux at Build 2025

At the Build 2025 conference, Microsoft unveiled several significant initiatives, demonstrating its commitment to the open-source community. Among the notable announcements were the open-sourcing of a new command-line text editor for Windows called Edit, the gradual migration of GitHub Copilot's AI-powered capabilities to the open-source Visual Studio Code repository, and the open-sourcing of the Windows Subsystem for Linux (WSL). While open-source software does not generate direct revenue, it plays a crucial role in Microsoft's broader strategy. By fostering engagement within the developer community, Microsoft can gather valuable insights, feedback, and innovative ideas that guide the development of its commercial products. This approach not only enhances market research but also acts as a pipeline to paid applications and services, encouraging developers to deepen their involvement with Microsoft's ecosystem. One of the key announcements was the introduction of Edit, a command-line text editor designed specifically for Windows. Beginning this summer, Edit will be installed by default through the Windows Insider Program. Developers can access Edit directly from the command line by running the command “edit.” The primary goal is to reduce context switching and keep developers seamlessly working within their preferred environments, ensuring a smoother workflow. Another significant step in the open-source direction was the decision to open-source GitHub Copilot, an AI-powered coding assistant. Currently available as an extension for Visual Studio Code, GitHub Copilot offers real-time suggestions and completions to help developers write code more efficiently. Microsoft plans to integrate these features into the open-source Visual Studio Code repository over the next few months. This move is expected to democratize access to advanced AI tools and foster a collaborative environment where developers can contribute to and improve the extension. Finally, Microsoft announced that the Windows Subsystem for Linux (WSL) will also become open-source. WSL enables Windows users to run a Linux environment directly on their systems, facilitating cross-platform development and improving productivity. By making the source code publicly available, Microsoft aims to empower developers to customize and enhance the subsystem according to their specific needs. This transparency and flexibility can lead to a more robust and versatile tool that better serves the diverse requirements of the developer community. These announcements highlight Microsoft's ongoing efforts to support and engage with the open-source community, driving innovation and collaboration in the tech industry. Through these initiatives, Microsoft is not only enhancing its own products but also contributing to a larger, more inclusive development ecosystem.