Kotlin is a statically-typed programming language that runs on the Java virtual machine. Developed by JetBrains
License: Open Source
Kotlin is a statically typed language that runs on the JVM and offers strong interoperability with Java, while CoffeeScript is a lightweight language that compiles into JavaScript, focusing on simplicity and expressiveness. Kotlin is better suited for Android and back-end development, whereas CoffeeScript excels in front-end web development.