Developers can access the Kotlin compiler, as well as enhancements to basic Java libraries, build tools for Ant and Maven integration, and a plugin to JetBrains's IntelliJ Idea IDE. Besides using IntelliJ, developers also can work with a text editor or access a Kotlin web demo, said Andrey Breslav, Kotlin lead designer at JetBrains.
Source code for Kotlin is available on github. Snapshot builds and source are available under an Apache 2 licence.
A beta release of Kotlin is hoped for this year or next, with a 1.0 release to follow. Kotlin joins other alternatives to Java on the JVM, such as Groovy and JRuby.