ucm-tools is written by Sam Watkins, from 2000, in the public domain

The person who associated a work with this deed has dedicated the work to the
public domain by waiving all of his or her rights to the work worldwide under
copyright law, including all related and neighboring rights, to the extent
allowed by law.

You can copy, modify, distribute and perform the work, even for commercial
purposes, all without asking permission.

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so.