I am working on one https://github.com/solana-labs/solana https://github.com/solana-labs/solana But also take a look at the most promising sharding project: ht

I am working on one https://github.com/solana-labs/solana https://github.com/solana-labs/solana But also take a look at the most promising sharding project: https://github.com/nearprotocol/nearcore https://github.com/nearprotocol/nearcore Two complete different approaches.