Here are some popular decentralized exchange (DEX) aggregators that were well-regarded as of that time:1inch:1inch is known for finding the best prices across multiple decentralized exchanges. It splits orders among various DEXs to optimize for lower slippage. Link - https://1inch.io/ 2 . Kyber is a decentralized liquidity protocol that aggregates liquidity from various sources to provide better rates. It supports a wide range of tokens. Link - https://kyberswap.com/swap/optimism/eth-to-usdc....