OwinFileServer

gistfile1.cs

public class Startup
{
    public void Configuration(IAppBuilder app)
    {
        // Configure Web API for self-host. 
        var config = new HttpConfiguration();
        config.Routes.MapHttpRoute(
            name: "DefaultApi",
            routeTemplate: "api/{controller}/{id}",
            defaults: new { id = RouteParameter.Optional }
        );

        app.UseWebApi(config);
        app.UseFileServer(true);
    }
}