Starknet ($STRK): It is a permissionless decentralized Layer 2 (L2) validity rollup, has a market cap of $1.33B, is currently trading at $1.83, and its all-time high is $4.41.
Metis ($METIS): It is a permissionless Layer 2 network, has a market cap of $473.1M, is currently trading at $90.59, and its all-time high is $323.54.
Optimism ($OP): The token of Optimism Collective, which controls the Optimism L2 blockchain, has a market cap of $3,192.68M , currently trading at $3.16.
zkSync id ($ZKID): It is a layer-2 protocol, has a market cap of $3.21M, is currently trading at $0.04861.