From Rosetta Code
KLIC is an implementation of KL1. Other implementations of KL1.

KLIC is a compiler that compiles KL1 to C code, this C code can run sequentially or in parallel on-top of the Parallel Virtual Machine software or via a shared memory implementation.

KLIC has recently been revived and is available at https://www.ueda.info.waseda.ac.jp/software.html

PVM is available at: https://www.csm.ornl.gov/pvm/