- Kotlin was created by the JetBrains team from St. Petersburg, Russia. JetBrains is perhaps best known for the IntelliJ Idea IDE, the basis for Android Studio. Kotlin is now used in a wide variety of environments across multiple operating systems.
- Google announced support for Kotlin on Android. According to the Android Developers Blog, as of 2021, over 1.2 million apps in the Google Play store use Kotlin, including 80% of the top one thousand apps.