Kyoto Common Lisp was developed in the mid 80s in Japan as an independent new implementation. It's a Common Lisp to C compiler. KCL was the first in a family of implementations based on KCL: AKCL, GCL, Delphi CL, ECL, CLASP. The currently usable implementations of those are ECL, CLASP and possibly GCL.

For KCL see: https://www.cs.cmu.edu/afs/cs/project/ai-repository/ai/lang/...