ForthOS, authored by Andy Valencia, is released into the public domain.
While I, the author, would appreciate an acknowledgement if you find
my code useful in your own projects, there is no legal aspect to this
request. If you feel you need to, you are free to take the code, put
your own name on it, and then insult me or ignore me. The code is free
for you to use as you see fit.
Please note that ForthOS is made available "as is", with no
guarantee about whether it works as described, works well,
works as expected,
or even works at all. The user takes all responsibility for
arranging that ForthOS is not used in any way which will cause
damage, inconvenience, or disruption.
Parts of ForthOS started from a software distribution known
as eForth. The distribution of eForth explicitly places it in the
public domain, so I'm assuming that ForthOS's use of parts of
eForth do not encumber ForthOS. I will update this license as needed
if I receive feedback to the contrary.