Yes, so the one I am most familiar with is Tendermint (disclaimer, I'm friends with some of the people involved). This is a genuinely novel consensus protocol t

Yes, so the one I am most familiar with is Tendermint (disclaimer, I'm friends with some of the people involved). This is a genuinely novel consensus protocol that is inspired by DLS and PBFT (classic Byzantine consensus stuff), and also runs smart contracts using the same languages as Ethereum. Ethereum themselves are trying to do something similar (Casper), but to the best of my knowledge it is not ready yet.