All you need for this is a global overlay network and a global DNS untied from physical infrastructure. Cryptographic identities (hash of pubkey will do) instead of IP addresses (because NATs are PITA and too many people use mobile devices behind big bad NATs), and finding (in something like Kademlia) records signed by authority you yourself chose to trust instead of asking DNS.

Then come encryption and dynamic routing and synchronization of published states.

One can have some kind of Kademlia for discovery of projects too, but on the next level.

I2P comes close, but it's more focused on anonymity.

OK, I'm not sure what I wrote makes sense. These things are easy to grasp somehow, but hard to understand well.