I'm interested in finding a concatenative language interpreter in Java. Ideally, it should satisfy the following conditions:
- It has an interpreter, not (only) a bytecode compiler for JVM.
- The language itself has decent documentation, not only a few examples and a "I'll document the rest someday" notice.
- The project is not completely abandoned.
In short, I'm looking for a reasonably "alive" concatenative language that can be embedded into Java easily.