What web frameworks/libraries? Something Kotlin specific?

Dropwizard here

have used http4k, spring-boot and micronaut in the past 12 months. slight preference for micronaut atm

Thank youf.

Ktor !

For building Kotlin projects I use #gradle And to develop server side code I use #hexagon (https://hexagonkt.com) disclaimer, I'm the author

Spring Boot and recently Vert.x

If you want to have fun, use Ktor. I wouldn't use if for gigantic systems yet, just because there is no 100% certainty about how it will stay