StarkWare is a ethereum layer-2 scaling protocol and one of main zk-rollup solutions. Starkware builds StarkNet( a permissionless decentralized ZK-Rollup) and StarkEx(a standalone permissioned Validity-Rollup）, both layer-2 scaling solutions for Ethereum using zero-knowledge rollup technology.
Blast is an EVM-compatible, optimistic rollup that raises the baseline yield for users and developers without changing the experience cryptonatives expect. Blast is an Ethereum L2 with native yield for ETH and stablecoins. On Blast, users balance compounds automatically, and earns Blast rewards on top.