We are in the process of completing these programs. MultiMap 2.0 for radiation hybrid mapping is now available as a beta version. The main remaining hurdle to full release is writing complete documentation. I do have some documentation available, and for an experienced MultiMap user or an experienced radiation hybrid mapper this is sufficient to get you started.
After installing and testing MultiMap for linkage mapping, you
will find the additional items you need for radiation mapping on the
ftp site: here.
For general radiation hybrid information (not specific to MultiMap):
Radiation Hybrid Mapping Information Page