Kawa (like Clojure) runs on the JavaVM, but has a longer pedigree (from 1996), good compatibility with standard Scehemes (including R7RS), and has a stronger emphasis on performance: It has optional types and semi-decent type inferance so it is easy to write code as performant as Java. It also has fast startup, and is unopinonated on how you run and bundle applications: it generates pretty vanilla class files that interoperate with Java easily. See https://www.gnu.org/software/org and https://gitlab.com/kashell/Kawa