Best layer2 chain

https://www.optimism.io/

#2 Uniswap

Bigest DEX

https://uniswap.org/

#3 DyDx

Trade perpetual like CEX

https://dydx.exchange/

#4 ENS

Name in web3

https://ens.domains/

#5 Lyra

Option Markets on-chain

https://www.lyra.finance/

These projects above were generously airdropped to almost all users when the tokens were launched. This is an important step in decentralized governance. These products are willing to work with users to jointly manage future development and share profits. They are the real web3 project.

Some other protocols may did a great job, but not web3 enough without decentralized governance and never share any benefit with their users.