http://nakamotoinstitute.org/Love what they've been doing but I don't think there should be "one" alternative. A centralized institution becomes political and eventually loses its best people. This is exactly whats happening to the BitCoin Foundation.
Oliver Janssens was/is looking for a decentralized software solution. He isn't looking for another centralized alternative to the foundation, but rather making it unnecessary.
A Decentralized Autonomous Organization would be the solution. I'm actually quite fascinated by it's implementation in Ethereum, and I'm hoping we could achieve atleast a third of that in the core protocol.