I'm beginning the R&D (and scoping requirements) to implement an OAUTH2 Authorization Server, and our existing framework is ASP.NET (version 4.6.1 +). Is there an existing well-exercised SDK for this? I see that the oauth.net folks are still pointing .NET developers to the NuGet package(s) DotNetOpenAuth, but it looks like the relevant packages there have not been touched since 2013. Is that just because they are really stable and hence really solid? Or has the world moved on and I should be looking elsewhere for building blocks for an OAUTH2 server implementation?
Advice very welcome!