[klaruz]

I just posted a similar comment above. It seems like the time is right for an open source advanced chat server. Maybe there already is one, I just don't know of it yet.

[joshstrange]

I've never used it but it looks like it might be what you are looking for: https://github.com/kandanapp/kandan

[hengheng]

Very cool, I'm looking into this. Thanks!