Hallo!
Just to clear the smoke a bit more that is created by the word "commercial": Everything that is included in a Linux distribution, which can be bought for money - like Redhat or Novell/Suse and even Debian -, then becomes commercial software: the Linux kernel, MySQL, Apache, Audacity, and even Pd.
hm ... okay, then my understanding of the word "commercial" was wrong ...
Thanks, LG Georg