I think the problem is more that development has really slowed since they lost the sponsorship of the company that was funding development (which employed almost the entire dev team). It&#x27;s not clear to me what the future of Groovy is. However it&#x27;s about 1000x more accessible to Java developers than Scala is. Scala reinvents the whole type system and uses custom collections etc. That makes reverse interoperability (I write a class in Scala and then use it from Java) significantly more challenging than Groovy where Groovy code looks identical to native Java in most respects.