.NET support policy The Protobuf team supports .NET in two ways: Generation of C# code by protoc The Google.Protobuf NuGet package, which provides runtime support for the generated code, as well as reflection and other facilities The support policy for these has previously been unclear, particularly in terms of which .NET runtimes are supported. From August 2023 onwards, support will be provided in accordance with the Google Open Source support policy for .