Grapevine
Fast, unopinionated, embeddable, minimalist web framework for .NET
Easy to Use
Embedding a REST/HTTP server in your application should be simple. If what you've been using doesn't feel simple, try Grapevine. It doesn't get any simpler than this.
Extensible
Grapevine is easy to extend to meet your needs. You can create your own implementation, or extend existing ones and add or replace only the parts you need.
Like, So Fast
Grapevine is async from end-to-end to increase the performance and responsiveness of your application, particularly when you have long-running operations.