suprnova is working. Interested in another coin pool.
No other pool that I know of.
Still waiting for ocminer of suprnova to release his sources as said.
There's a bounty for opensource pool software too.
How much is the bounty for an open source pool? I can talk to my connections and maybe I can help you with it, if they are motivated enough.
It was set a lot of time ago, we can reconsider it.
Keep in mind that, in order to make a working xcn pool, you need to customize both the interface to the coin daemon and to the stratum miners.