I find blog posts about implementing stuff like OWIN integration or IAuthenticationFilter
in Web API 2, but I can never work out what NuGet package(s) I need.
I seem to randomly Google stuff and look through GitHub projects, other blogs hoping for some clue.
Considering everything is going NuGet, is there a better way? A massive index of Package > Assembly > Types?
There is exactly what you want and it's called reverse package search but only for ASP.NET 5 packages - at least for now. You can make your search here : Reverse Package Search
Example query: Search for System.String