A friend and I were talking the other day, and we realized 1) that we both thought RDF was a nifty idea for organizing graph-oriented stuff and 2) that we had no idea what had become of it.

I looked around a bit and it seemed as if little was happening in the RDF community.  The links all seemed to peter out in the mid-‘00s, and I wondered where, if anything, the innovation was happening in this area.

Please comment if you can point me to cutting-edge companies and research ideas wrt RDF and its stack.

Inquiring minds would love to know.