There are a number of public services hosted on fyber.space. Al of those
Services are free of charge, hosted using only free (as in free speech)
The use of the services listed below is prohibited for commercial use.
There is a xmpp-Server on xmpp.fyber.space. Accounts can be registered through a capable xmpp-client.
There is a public Nextcloud instance on https://cloud.fyber.space
There is a public Jitsi-Meet instance on https://meet.fyber.space
fyber.space also hosts Mailinglists. A list with info’s can be found
If you want to have a Mailinglist hosted, just ask nicely ;) .