Old Unix apps: are Solaris PC Netlink and SCO AFPS the same program?

I'm using AFPS on Unixware, just for curiosity and learning (I already know there is Samba and AFPS is not supported since the 2008). Searching on net I see a product which has the same paths (/var/opt/lanman) and some identical commands (net, euctosjis, etc.) called Solaris PC NetLink Simple question: is the same program maybe re-licensed or renamed? I also found a manual of a old server for AT&T and Siemens Unix called "Advanced Server for UNIX" which has the same commands of AFPS. I think probably is the same program re-licensed or renamed.