Well. Most of the time the program files are not included in the archive.org snapshots.
I am part of a family of lawyers and we have quickly reviewed the different licenses and we are quite confident that as long as the serial/key/whatever is not included, there will be no problem.
Opal are Omnioutliner have been gathered.
I am still looking for Tinderbox, Circus Ponies, Notetaker, Tao, etc.
Regards