I'm Yoshifumi Kawai, CEO/CTO of Cysharp, Inc.
I have published a lot of C# OSS.
Currently, I continue to publish OSS at github.com/Cysharp, so please look there for the latest production OSS.
I strive to provide state-of-the-art libraries that are always mindful of performance and modern APIs.
As the original author of MessagePack for C#, I also continue to maintain it in the MessagePack-CSharp Organization.
If you want to support me, please see GitHub Sponsors
This is currently my primary focus for C# OSS.