Is there any overview of different server-side kotlin frameworks (e.g. Ktor, Spring Kotlin, http4k) with comparisons?

Yes, there is. But Kotlin isn’t very server side heavy so I wouldn’t base my apps on blog posts and do my own research I highly recommend Javalin

But Kotlin isn’t very server side heavy

tons of companies (including ours) is using Kotlin server side As for which framework to pick -> play around with them and see which one you prefer and whether it provides all the features you need. Spring Boot is the gorilla in the room and is arguably the most popular one but it is also pretty heavy (as compared to some other alternatives) and autoconfigs might seem "magical". That being said, due to the sheer amount available integrations it generally just works with anything you throw at it.

You could compare different tools in these websites: • Performance: https://www.techempower.com/benchmarks • Coding: http://www.todobackend.com

Thank you!