Kotlin
Combine filters →1 project is written in Kotlin, listed alphabetically. It is Ktor. All of them web frameworks, most of them open source. 38 records do not record this field, and cannot appear here either way. Counts only projects with momentum; the full list has the rest.
K
KtorKotlin framework for building asynchronous servers and HTTP clients, extended with plugins and engines.
What is the best web software written in Kotlin?
We don't know. A portfolio, a shop and a documentation site need different things from their software, and so does a team of one against an agency. Nobody pays to be listed here and the order is alphabetical.