Avalanche is a smart contract platform that achieves high throughput through a novel Avalanche consensus mechanism. It supports custom blockchains called Subnets, making it attractive for enterprise and gaming. Its C-Chain is EVM-compatible, allowing Ethereum dApps to deploy easily.
Ethereum is the leading smart contract platform. It allows developers to build decentralised applications (dApps) and enabled the explosion of DeFi, NFTs, and token issuance. Transitioned from Proof of Work to Proof of Stake in 2022.
Solana is a high-performance Layer 1 blockchain capable of processing up to 65,000 transactions per second using a novel Proof of History consensus mechanism. It has become a major hub for DeFi, NFTs, and consumer crypto applications.