Meteora, Jupiter, and Uniswap are projected to generate over $1 billion each in transaction fee revenue by 2025, according to cryptodiffer data. Meteora is expected to lead with $1.25 billion, followed by Jupiter at $1.11 billion, and Uniswap at $1.06 billion. These DeFi protocols are set to dominate the rankings for total transaction fees generated, highlighting their significant role in the decentralized finance sector.