[Free-RTC] list of communities using SIP or XMPP?

[Daniel Pocock]

It would be interesting to make a list of free software communities who
have their own SIP and/or XMPP

So far I'm aware of the following:

debian.org:  SIP and XMPP

gnome.org:  XMPP

fsfe.org: XMPP on jabber.fsfe.org

fedoraproject.org:  SIP on fedrtc.org


Is anybody aware of others?

Does anybody have a list of domains for communities involved in free
software so I could write a script to scan them for SRV records for SIP
and XMPP?

Where could we publish such a list, maybe a wiki or something else?