Aqui é o MINIX 3 licença:
License
Copyright (c) 1987, 1997, 2006, Vrije Universiteit, Amsterdam,
The Netherlands All rights reserved. Redistribution and use of the MINIX 3
operating system in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the Vrije Universiteit nor the names of the
software authors or contributors may be used to endorse or promote
products derived from this software without specific prior written
permission.
* Any deviations from these conditions require written permission
from the copyright holder in advance
Disclaimer
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS, AUTHORS, AND
CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
NO EVENT SHALL PRENTICE HALL OR ANY AUTHORS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
As três primeiras cláusulas são exatamente as da licença BSD de 3 cláusulas , que é compatível com a GPL . A quarta cláusula é redundante, qualquer outro uso é violação de direitos autorais, a menos que explicitamente permitido pelo detentor dos direitos autorais. Portanto, a licença do MINIX é compatível com GPL.