Wandora – Sneak Preview offers support for converting MARCXML into a topic map. This link will go away when the official Wandora release supports this feature.
Aki Kivelä’s posted details at: [topicmapmail] MARCXML to Topic Maps implementation!
Aki also created an example if you don’t want to install Wandora to see this feature: Example MARCXML to topic map conversion.
As Aki would be the first to admit, this isn’t a finished solution. It is an important step on the way towards one possible solution.
Another important step is for members of this list t0 use, evaluate, test the software and give constructive feedback. Can be negative but try to offer a solution for any problem you uncover.