Kawa can't capture continuations, so SISC definitely gets more attention. However, Kawa is way faster. If you read SISC's performance boasting you'll notice t

Kawa can't capture continuations, so SISC definitely gets more attention. However, Kawa is way faster. If you read SISC's performance boasting you'll notice that it only compares itself to other Scheme interpreters on the JVM. Kawa is a compiler.