EOS is arguably the strongest competitor to Ethereum. Ethereum was the first blockchain to introduce smart contracts. Ethereum smart contracts are written in Solidity. EOS smart contracts are written in C ++. Writing smart contracts on EOS is much easier than writing smart contracts on Ethereum. Ethereum has serious competition in terms of the development process. If you need to make the same application on both Ethereum and EOS, then on EOS it will be much easier and faster.