Ive tested FreeNFS with mixed results. It is also very basic , and does not work smoothly with the NMT GUI, so at €19 Hanewin could well be the better choice at this point.
I have been setting up NFS for a friend – who is running Win 7 64 bit. We eventually(*) got Hanewin working ( €19 for non-commercial use) but I was still a bit miffed there seemed to be no readily available free implementation of an industry standard protocol for which much source code is available, and set about on a quest for a free alternative…
WebDAV is a great way of accessing files over the Internet. It’s essentially FTP, but not so archaic and fragile. It works well through firewalls, can be encrypted, and is just generally a nice, modern, useful protocol.