One of the layer-2 solutions Ethereum-based is the Polygon blockchain.
They have low gas fees, fast transactions and a lot of developers envolved in the project.
Important companies are investing resources on it.
It’s enough to follow Opensea, leader in NFTs market, dedicating a low cost channel on Polygon blockchain.
On the top of this blockchain, as in Ethereum, among of the most interesting Dapps there are the Decentralized Exchanges (DEXs) as opposed to their classic web counterparts: the Centralized Exchanges (CEXs).