As some of you know, I built my own server software, called Hexarc, to host Anacreon, the Multiverse, and Ministry. I've been pretty happy with its performance, though there is still a lot of work to do.
I think Hexarc is finally at the point where people could start playing with it, if interested. I've put up a site to publicize it:
If you're at all interested in playing with it, give it a try. It's very rough, but I think it has a lot of potential. Hexarc is open source (GPL 3) so you can use it freely. If you wish to contribute to its development, let me know.