GitHub - johnsonjh/pmince: pmince: Portable MINCE (MINCE is Not Complete[ly] EMACS)
License is vague:
Tue Aug 17 16:29:56 2021 - permalink -
MINCE (version 2.5, 2.6, and 2.63), DIFF (version 1.1), Scribble (version 1.3), Pencil (version 1.3), and Crayon (version 1.3), along with any associated documentation (the "Materials"), are Copyright © 1980—1985 by Mark of the Unicorn, Inc.
These Materials are provided in accordance with Title 17 U.S.C. Section 107, and distributed without profit, in original and unmodified form, for non-commercial research and educational purposes, for use by those who have expressed a prior general interest in receiving the Materials.
The Portable MINCE authors claim no affiliation, endorsement, or sponsorship whatsoever by the originators of the Materials.
If you wish to use these copyrighted Materials for any purposes beyond "fair use", you MUST locate and obtain permission from the current copyright owner.