A neural/distributed FreeBSD network

[Kyrre Nygard]

Hello!

Got a weird question here ...

I'm a bit curious as to how one can make multiple computers
act as one network. I'm not talking merely /etc/hosts and gateways
or some VPN where connections are just encrypted, but like
something more ... neural, you all feel me? where the operating
systems themselves act together in a distributed fashion.

Does something like this even exist?

Thanks

All the best,
Kyrre