In addition there are several C# IDEs available, including from JetBrains who creates IntelliJ! Roslyn makes fancy features such as auto complete available to text editors as well such as VS Code or Atom.
In Java I can run Jetty or Netty on whatever and use http2. Old Os or whatever doesn't matter because the protocol isn't tied to the OS network stack.
ETA: Also, my comment above was meant to be from the perspective of that it is a technically finished product with an active support lifespan. I did not mean to imply that it was better (or worse) than any alternatives, but that under the accepted definition of "production ready" where a thing is finished and supported, it is suitable to that.
.NET Core has none of that going.
I'm use VS all the time, so I'm not going to dump on it too much, but there is definitely room for improvement. I'm only vaguely familiar with VS 2017, but I understand they've put their IDE on a diet.