Hi Paul, yep a lot of sites have listed it as abandon ware.
Download sites slip under the rug claiming they are an archive but "It is unlawful to distribute the old software and games" or so Wikipedia says.
The rights to the software may have been bought by another company or have reverted to its original author. Tracing the paper trail could take awhile but I doubt it has been transferred to the public domain.
That said I would like to hear a legal input if their are loopholes.
Might start with the author if I can track him down as maybe he kept an eye on all the merges.