Note: The following message was originally posted by an unknown forum member on 12/22/2009, but was flagged as spam. I'm manually reposting it here to make it available to everyone.
I have good news as well as bad news about one particular format, ZOO. BooZ does not launch on 64-bit systems, returning an error instead about "requiring a 64-bit version". Most other ZOO programs have the same problem. However, after much Google searching, I have found a viable alternative at http://archives.math.utk.edu/software/multi-platform/gap/util/ , which, although I have not fully tested it, seems to work fine on my 64-bit computer.
Re: Compatibility with 64-Bit?
Thanks, will check it out for the next release. I'd very much like to move away from the old 16-bit binaries, as they have more issues that just not running under 64-bit Windows.