Comment by jacquesm
13 days ago
Quantum has muddied the waters considerably here by at some point releasing the code under a fully open license. They tried hard to reverse that decision but I'm sure there are still copies of that version floating around.
In contrast to Minix 3.0+, no version of QNX has ever been fully open. At its most permissive, it was made available (behind a form submission) under a look-but-don't-touch All Rights Reserved sourceware license.