Microsoft Open Source

Microsoft Open Source is the central hub for Microsoft's open source projects, documentation, and community contributions, showcasing thousands of repositories across development tools, cloud infrastructure, artificial intelligence, web frameworks, and developer experiences that Microsoft maintains on GitHub and other open source platforms. The project showcase features major open source initiatives including the Visual Studio Code editor with its extension ecosystem, the TypeScript programming language, the .NET runtime and framework, the Azure SDK libraries for cloud development, and machine learning frameworks and tools including ONNX runtime and DeepSpeed. The documentation portal provides comprehensive guides for contributing to Microsoft open source projects, including coding standards, pull request workflows, code review processes, and licensing information for contributors from individual developers through corporate teams. The community engagement programs support open source maintainers, fund critical infrastructure projects, and provide tools and resources for open source sustainability. The project categories organize repositories by technology domain including developer tools, cloud and infrastructure, artificial intelligence and machine learning, web and mobile development, gaming, security, and data platforms. The contribution guides detail how external developers can participate in Microsoft projects through issue reporting, feature development, documentation improvements, and community support. The transparency reports provide visibility into Microsoft's open source strategy, project health metrics, and community diversity initiatives. Designed for software developers, IT professionals, students, and organizations using or contributing to Microsoft technologies.