Jatha is a Java library that implements a fairly large subset of Common LISP, including most of the datatypes (e.g. packages, bignums) and their associated methods. The API allows programmatic access to LISP from Java, either using an eval() method or using Java methods. Additional LISP primitives can be written in Java and registered at runtime to be used in the LISP interpreter. This one is different from the other Jatha listed here.