I'm fairly new to Vapor, and not sure what the ecosystem was like 3-4 years ago, but it's possible it has matured a lot if the last time you checked it out was

I'm fairly new to Vapor, and not sure what the ecosystem was like 3-4 years ago, but it's possible it has matured a lot if the last time you checked it out was that long ago. I know Vapor's Fluent ORM has improved quite a bit recently, especially as it can take advantage of property wrappers introduced in Swift 5.1. It's not hard to imagine Fluent approaching feature parity with Rails' ActiveRecord and Django's ORM, but with much better performance and type-safety. FWIW, Kitura is probably dead in the water as IBM has stopped supporting it.