Sei Network is a layer 1 blockchain built using the Cosmos SDK and Tendermint core, and features a built-in central limit orderbook (CLOB) module. Decentralized applications building on Sei can build on top of the CLOB, and other Cosmos-based blockchains can leverage Sei’s CLOB as a shared liquidity hub and create markets for any asset.
EigenLayer is a protocol built on Ethereum that introduces restaking, a new primitive in cryptoeconomic security. This primitive enables the reuse of ETH on the consensus layer. Users that stake ETH natively or with a liquid staking token (LST) can opt-in to EigenLayer smart contracts to restake their ETH or LST and extend cryptoeconomic security to additional applications on the network to earn additional rewards.
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.