Compact RDF to Topic Maps (CRTM) is a draft mapping from RDF to Topic Maps from Lars Heuer.
CRTM mappings are re-usable, which according to Lars is not possible with other RDF syntaxes. (Why would anyone re-use a mapping when they can re-invent it? Re-invention is much safer than actual progress.)
I don’t know if Lars Heuer and the Topic Maps Lab are competing to see who can release the most interesting topic map software/tools but they are making the rest of us look like laggards. 😉
Or have I missed something really cool/important that others have released recently?