I use the open source framework Cybergarage.
I've searched for GoldenDMS on the DLNA website, but it appears there is nothing available. Secondly, the GoldernDMS and Cybergarage appear on a chineze post from a specific website and that's it.
You can check the following website to see more of Cybergarage http://www.cybergarage.org/oss/ and this one https://www.dlna.org/products/ for GoldenDMS.