Optimism上交互成本低，以下未发币项目可以交互，做真实用户：

1.https://app.rubicon.finance/trade

2.https://clipper.exchange DEX

3.https://app.slingshot.finance DEX

4.https://www.pikaprotocol.com/ 合约

5.https://www.polynomial.fi/

6.https://kwenta.io/dashboard

7.https://www.tokensets.com/

8.app.umbra.cash 支付

9.https://www.superfluid.finance/home 流支付

10.https://sablier.finance/ 流支付

11.https://quixotic.io/ NFT

12.https://tofunft.com/optimism NFT

13.https://app.orbiter.finance/ 跨链

14.https://via.exchange/ 跨链

15.https://mean.finance/ 跨链

16.https://portr.xyz/ 跨链

17.https://www.poly.network/#/ 跨链

18.https://www.arrakis.finance/

19.pegasus.finance

20.https://www.layerswap.io/