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dotnet/runtime · source
Snapshot 0 · 2026-11-04T12:47:25Z · C# · MIT
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.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.
README at capture
# .NET Runtime
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* [What is .NET?](#what-is-net)
* [How can I contribute?](#how-can-i-contribute)
* [Reporting security issues and security bugs](#reporting-security-issues-and-security-bugs)
* [Filing issues](#filing-issues)
* [Useful Links](#useful-links)
* [.NET Foundation](#net-foundation)
* [License](#license)
This repo contains the code to build the .NET runtime, libraries and shared host (`dotnet`) installers for
all supported platforms, as well as the sources to .NET runtime and libraries.
## What is .NET?
Official Starting Page: <https://dotnet.microsoft.com>
* [How to use .NET](https://learn.microsoft.com/dotnet/core/get-started) (with VS, VS Code, command-line CLI)
* [Install official releases](https://dotnet.microsoft.com/download)
* [Documentation](https://learn.microsoft.com/dotnet/core) (Get Started, Tutorials, Porting from .NET Framework, API reference, ...)
* [Deploying apps](https://learn.microsoft.com/dotnet/core/deploying)
* [Support](https://github.com/dotnet/core/blob/main/support.md) (Releases, OS Versions, ...)
* [Roadmap](https://github.com/dotnet/core/blob/main/roadmap.md)
## How can I contribute?
We welcome contributions! Many people all over the world have helped make this project better.
* [Contributing](CONTRIBUTING.md) explains what kinds of contributions we welcome
* [Workflow Instructions](docs/workflow/README.md) explains how to build and test
* [Dogfooding .NET](docs/project/dogfooding.md) explains how to get nightly builds of the runtime and its libraries to test them in your own projects.
## Reporting security issues and security bugs
Security issues and bugs should be reported privately to the Microsoft Security Response Center (MSRC) via the [MSRC Researcher Portal](https://msrc.microsoft.com/report/vulnerability/new). You should receive a response within 24 hours. Further information can be found in the [Security TechCenter](https://www.microsoft.com/msrc/faqs-report-an-issue). You can also find these instructions in this repo's [Security doc](SECURITY.md).
Also see info about related [Microsoft .NET Bounty Program](https://www.microsoft.com/msrc/bounty-dot-net-core).
## Filing issues
This repo should contain issues that are tied to the runtime, the class libraries and frameworks, the installation of the `dotnet` binary (sometimes known as the `muxer`) and the installation of the .NET runtime and libraries.
For other issues, please file them to their appropriate sibling repos. We have links to many of them on [our new issue page](https://github.com/dotnet/runtime/issues/new/choose).
## Useful Links
* [.NET source index](https://source.dot.net) / [.NET Framework source index](https://referencesource.microsoft.com)
* [API Reference docs](https://learn.microsoft.com/dotnet/api)
* [.NET API Catalog](https://apisof.net) (incl. APIs from daily builds and API usage info)
* [API docs writing guidelines](https://github.com/dotnet/dotnet-api-docs/wiki) - useful when writing /// comments
* [.NET Discord Server](https://aka.ms/dotnet-discord) - a place to discuss the development of .NET and its ecosystem
## .NET Foundation
.NET Runtime is a [.NET Foundation](https://www.dotnetfoundation.org/projects) project.
There are many .NET related projects on GitHub.
* [.NET home repo](https://github.com/Microsoft/dotnet) - links to 100s of .NET projects, from Microsoft and the community.
* [ASP.NET Core home](https://learn.microsoft.com/aspnet/core) - the best place to start learning about ASP.NET Core.
This project has adopted the code of conduct defined by the [Contributor Covenant](https://contributor-covenant.org) to clarify expected behavior in our community. For more information, see the [.NET Foundation Code of Conduct](https://www.dotnetfoundation.org/code-of-conduct).
General .NET OSS discussions: [.NET Foundation Discussions](https://github.com/dotnet-foundation/Home/discussions)
## License
.NET (including the runtime repo) is licensed under the [MIT](LICENSE.TXT) license.