Carrara and its (arguably) superior ancestors
Ray Dream and
Infini-D went in the end to a new company
Eovia, which was created by people who had worked on the products under MetaCreations.
Canoma seems to have simply ceased to exist, and is probably still owned by MetaCreations, who likely have no intention of doing any thing with it
MetaCreations its self was the result of a long list of
mergers and
acquisitions of various graphics software companies the number of which have rarely been seen in any industry, and was at least somewhat of a
point of humor for a time. Including
Fractal Design,
Ray Dream inc,
KPT (that also went by another name for a short time before one of the mergers, this name as well as several others presently elude my memory).