Powerful replacement for macOS / OS X Terminal.
The copyright holder of all recent versions of MacTerm and MacTelnet is Kevin M. Grant, as detailed in "About MacTerm".
Note that each source code file clearly marks (at the top) the license that is applicable to the file. Each file has only ONE applicable license even if the project allows multiple licenses.
In general, library code in "Build/Shared" is more liberally licensed than the terminal's own code in "Build/Application".
MAIN SOURCE CODE LICENSE MacTerm is free software; you may distribute it or modify it under the terms of the GNU General Public License, either version 2 of the license or (at your option) a later version.
Note that the "source" of a component includes everything in its directory tree: Code, Resources, Artwork, etc. as well as any scripts that are required to build it.