[//]: # (title: Introduction) Dokka is an API documentation engine for Kotlin. Just like Kotlin itself, Dokka supports mixed-language projects. It understands Kotlin's [KDoc comments](https://kotlinlang.org/docs/kotlin-doc.html#kdoc-syntax) and Java's [Javadoc comments](https://www.oracle.com/technical-resources/articles/java/javadoc-tool.html). Dokka can generate documentation in multiple formats, including its own modern [HTML format](dokka-html.md), multiple flavors of [Markdown](dokka-markdown.md), and Java's [Javadoc HTML](dokka-javadoc.md). Here are some libraries that use Dokka for their API reference documentation: * [kotlinx.coroutines](https://kotlinlang.org/api/kotlinx.coroutines/) * [Bitmovin](https://cdn.bitmovin.com/player/android/3/docs/index.html) * [Hexagon](https://hexagonkt.com/api/index.html) * [Ktor](https://api.ktor.io/) * [OkHttp](https://square.github.io/okhttp/5.x/okhttp/okhttp3/) You can run Dokka using [Gradle](dokka-gradle.md), [Maven](dokka-maven.md) or from the [command line](dokka-cli.md). It is also [highly pluggable](dokka-plugins.md). See [Get started with Dokka](dokka-get-started.md) to take your first steps in using Dokka. ## Community Dokka has a dedicated `#dokka` channel in [Kotlin Community Slack](https://surveys.jetbrains.com/s3/kotlin-slack-sign-up) where you can chat about Dokka, its plugins and how to develop them, as well as get in touch with maintainers.