This repo contains the library implementation (called "CoreFX") for .NET Core. It includes System.Collections, System.IO, System.Xml, and many other components.
The corresponding [.NET Core Runtime repo](https://github.com/dotnet/coreclr) (called "CoreCLR") contains the runtime implementation for .NET Core. It includes RyuJIT, the .NET GC, and many other components.
Runtime-specific library code ([mscorlib](https://github.com/dotnet/coreclr/tree/master/src/mscorlib)) lives in the CoreCLR repo. It needs to be built and versioned in tandem with the runtime. The rest of CoreFX is agnostic of runtime-implementation and can be run on any compatible .NET runtime (e.g. [CoreRT](https://github.com/dotnet/corert)).
* [Bringing more APIs to .NET Core](https://github.com/dotnet/corefx/blob/master/Documentation/project-docs/porting.md) (and why some APIs will be left out)
If you are having issues with the "full" .NET Framework (also called "Desktop"), the best way to file a bug is at [Connect](http://connect.microsoft.com/VisualStudio) or through [Product Support](https://support.microsoft.com/en-us/contactus?ws=support) if you have a contract.
This section is **in progress** here: [New contributor Docs - Issues](https://github.com/dotnet/corefx/wiki/New-contributor-Docs#issue-guide) (feel free to make it better - it's easy-to-edit wiki with RW permissions to everyone!)
Each issue area has one or more Microsoft owners, who are [listed here](https://github.com/dotnet/corefx/blob/master/Documentation/project-docs/issue-guide.md).
This section is **in progress** here: [New contributor Docs - Contributing](https://github.com/dotnet/corefx/wiki/New-contributor-Docs#contributing-guide) (feel free to make it better - it's easy-to-edit wiki with RW permissions to everyone!)
* General .NET OSS discussions: [.NET Foundation forums](http://forums.dotnetfoundation.org)
* Chat with other community members [](https://gitter.im/dotnet/corefx?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) [](http://tattoocoder.com/aspnet-slack-sign-up)
This project has adopted the code of conduct defined by the [Contributor Covenant](http://contributor-covenant.org/)
to clarify expected behavior in our community. For more information, see the [.NET Foundation Code of Conduct](http://www.dotnetfoundation.org/code-of-conduct).
Security issues and bugs should be reported privately, via email, to the Microsoft Security Response Center (MSRC) <secure@microsoft.com>. You should receive a response within 24 hours. If for some reason you do not, please follow up via email to ensure we received your original message. Further information, including the MSRC PGP key, can be found in the [Security TechCenter](https://technet.microsoft.com/en-us/security/ff852094.aspx).
Also see info about related [Microsoft .NET Core and ASP.NET Core Bug Bounty Program](https://technet.microsoft.com/en-us/mt764065.aspx).
|**OS X 10.12**|[](https://ci.dot.net/job/dotnet_corefx/job/master/job/osx10.12_debug/lastCompletedBuild/testReport)|[](https://ci.dot.net/job/dotnet_corefx/job/master/job/osx10.12_release/lastCompletedBuild/testReport)|[](https://ci.dot.net/job/dotnet_corefx/job/master/job/outerloop_netcoreapp_osx_debug/lastCompletedBuild/testReport)|[](https://ci.dot.net/job/dotnet_corefx/job/master/job/outerloop_netcoreapp_osx_release/lastCompletedBuild/testReport)|
|**Red Hat 7.2**|[](https://ci.dot.net/job/dotnet_corefx/job/master/job/rhel7.2_debug/lastCompletedBuild/testReport)|[](https://ci.dot.net/job/dotnet_corefx/job/master/job/rhel7.2_release/lastCompletedBuild/testReport)|[](https://ci.dot.net/job/dotnet_corefx/job/master/job/outerloop_netcoreapp_rhel7.2_debug/lastCompletedBuild/testReport)|[](https://ci.dot.net/job/dotnet_corefx/job/master/job/outerloop_netcoreapp_rhel7.2_release/lastCompletedBuild/testReport)|
