The corefx repo contains the library implementation (called "CoreFX") for .NET Core. It includes System.Collections, System.IO, System.Xml, and many other components. You can see more information in Documentation. The corresponding .NET Core Runtime repo contains the runtime implementation (called "CoreCLR") for .NET Core. It includes RyuJIT, the .NET GC, and many other components. Runtime-specific library code - namely 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.
| Inner Loop | Outer Loop | |
|---|---|---|
| CentOS 7.1 |   |
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| Debian 8 |   |
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| Fedora 23 |   |
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| openSUSE 13.2 |   |
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| openSUSE 42.1 |   |
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| OS X 10.11 |   |
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| Red Hat 7.2 |   |
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| Ubuntu 14.04 |   |
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| Ubuntu 16.04 |   |
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| Ubuntu 16.10 |   |
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| Windows 7 |   |
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| Windows 8.1 |   |
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| Windows 10 |   |
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| Windows Nano Server 2016 |   |
Some of the best ways to contribute are to try things out, file bugs, and join in design conversations. If you are having issues with the Full .NET Framework or .NET Runtime, the best way to file a bug is at Connect or through Product Support if you have a contract.
Want to get more familiar with what's going on in the code?
