[pkolaczk]

Right, and there are some really big things in Scala which already got quite a lot attention from enterprises: Play Framework, Apache Spark, Akka. Funny, I know some people using those things from... Java even though it is very cumbersome to do so.

[frowaway001]

Yes, isn't that great? They lower the cost of switching, by not forcing people to migrate both language _and_ framework at the same time.

Though I had stuff like parboiled2, Slick, scala.meta, dotty, shapeless in mind (which don't support Java at all), these are good examples, too.