Write concise and expressive code while maintaining full compatibility and interoperability with Java

Great web frameworks at your service!

Use popular frameworks

With its versatile set of features, Spring is the world’s most popular Java framework. When it’s paired with Kotlin, and its concise syntax, the two make the ultimate combo for application development.

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Ktor is a multiplatform toolkit built by JetBrains for creating Web applications in Kotlin. It makes use of coroutines for high scalability and offers an easy-to-use API.

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Build your next Kotlin microservice application with ease and test it, too.

Looking to implement the next cloud-native service with Kotlin? Try Quarkus!

Create web applications with great-looking UI using Java and Kotlin.

This full-stack framework with a wide range of add-ons is a great fit for business application development with Kotlin.

A tool-kit for building reactive applications on the JVM.

The HTTP toolkit written in pure Kotlin. Enables the serving and consuming of HTTP services in a functional and consistent way.

A lightweight Java and Kotlin framework.

A community curated list of Kotlin related resources, frameworks, libraries, and tools.

Use your favorite tools

IDE support

For a Java developer, getting started with Kotlin is very easy. Kotlin is natively supported in IntelliJ IDEA, and the automated Java-to-Kotlin converter is there to help you with your first steps. The powerful refactoring, navigation, and static code analysis features make programming in Kotlin a pleasure!

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Build tools

Use your favorite build tool for building Kotlin programs. Plugins are available for Gradle, Maven, Ant, and Bazel ↗

Better scalability with Coroutines

GOTO 2019 • Server-side Kotlin with Coroutines

Kotlin’s support for Coroutines helps you build server-side applications that scale to massive numbers of clients, with modest hardware requirements.

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Who uses Kotlin for server-side

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Ktor quick start

Ktor is a multiplatform toolkit built by JetBrains for creating Web applications in Kotlin. It makes use of coroutines for high scalability and offers an  easy-to-use API.

Go server-side
with Spring

Use Kotlin with the familiar Spring framework to build powerful enterprise applications. 