Contribution
Kotlin is an open-source project under the Apache 2.0 License. The source code, tooling, documentation, and even this website are maintained on GitHub. Kotlin is developed by JetBrains, but we are always on the lookout for more people to help us.
Participate in Early Access Preview
You can help us improve Kotlin by participating in Kotlin Early Access Preview (EAP) and providing us with your valuable feedback.
For every release, Kotlin ships a few preview builds where you can try out the latest features before they go to production. You can report any bugs you find to our issue tracker YouTrack and we will try to fix them before a final release. This way, you can get bug fixes earlier than the standard Kotlin release cycle.
Contribute to the compiler and standard library
If you want to contribute to the Kotlin compiler and standard library, go to JetBrains/Kotlin GitHub, check out the latest Kotlin version, and follow the instructions on how to contribute.
You can help us by completing open tasks. Please keep an open line of communication with us because we may have questions and comments on your changes. Otherwise, we won't be able to incorporate your contributions.
Contribute to the Kotlin IDE plugin
Kotlin IDE plugin is a part of the IntelliJ IDEA repository.
To contribute to the Kotlin IDE plugin, clone the IntelliJ IDEA repository and follow the instructions on how to contribute.
Contribute to other Kotlin libraries and tools
Besides the standard library that provides core capabilities, Kotlin has a number of additional (kotlinx) libraries that extend its functionality. Each kotlinx library is developed in a separate repository, has its own versioning and release cycle.
If you want to contribute to a kotlinx library (such as kotlinx.coroutines or kotlinx.serialization) and tools, go to Kotlin GitHub, choose the repository you are interested in and clone it.
Follow the contribution process described for each library and tool, such as kotlinx.serialization, ktor and others.
If you have a library that could be useful to other Kotlin developers, let us know via feedback@kotlinlang.org.
Contribute to the documentation
If you've found an issue in the Kotlin documentation, feel free to check out the documentation source code on GitHub and send us a pull request. Follow these guidelines on style and formatting.
Please keep an open line of communication with us because we may have questions and comments on your changes. Otherwise, we won't be able to incorporate your contributions.
Translate documentation to other languages
You are welcome to translate the Kotlin documentation into your own language and publish the translation on your website. However, we won't be able to host your translation in the main repository and publish it on kotlinlang.org.
This site is the official documentation for the language, and we ensure that all the information here is correct and up to date. Unfortunately, we won't be able to review documentation in other languages.
Hold events and presentations
If you've given or just plan to give presentations or hold events on Kotlin, please fill out the form. We'll feature them on the event list.