Kotlin language: for JVM, JS, and Native

Kotlin is one of official programming languages for Android development.
But it can apparently be used in many other environments, including for server, JavaScript,
and even iOS, Windows, Mac and Linux!

podcast interview with lead language designer of Kotlin at JetBrains

Kotlin Design with Andrey Breslav - Software Engineering Daily

There is apparently 50 people in JetBrains working on Kotlin, a quite significant number.


Interview with Andrey Breslav, Lead Language Designer of Kotlin – Mapping The Journey (2017)
KotlinConf 2017 – Opening Keynote by Andrey Breslav – YouTube
Kotlin Blog | Kotlin — Programming Language by JetBrains
KotlinConf 2017 – Deep Dive into Kotlin/Native by Andrey Breslav – YouTube
How to Kotlin – from the Lead Kotlin Language Designer (Google I/O ’18) – YouTube
Community
Basic Types: Numbers, Strings, Arrays – Kotlin Programming Language
Calling Kotlin from Java – Kotlin Programming Language
Kotlin Programming Language