LayerZero is an omnichain interoperability protocol that enables cross-chain messaging and asset transfers between different blockchains. Rather than operating bridges with locked liquidity, LayerZero provides a messaging layer that allows smart contracts on one chain to communicate directly with contracts on another chain through a system of ultra-light nodes, oracles, and relayers. The protocol supports over 50 blockchains including Ethereum, BNB Chain, Avalanche, Polygon, Arbitrum, Optimism, and Solana. LayerZero powers several major cross-chain applications including Stargate Finance for token transfers, and enables developers to build omnichain fungible tokens (OFTs) and NFTs that exist natively across multiple chains.
Wormhole is a cross-chain messaging and bridging protocol that connects over 30 blockchains, enabling the transfer of assets and data between different networks. Originally built on Solana, Wormhole has expanded to support Ethereum, BNB Chain, Polygon, Avalanche, Arbitrum, Optimism, Sui, Aptos, and many other chains. The protocol uses a network of Guardian nodes that observe and validate cross-chain messages, with 19 validators securing the network. Wormhole supports various cross-chain use cases including token bridges, NFT transfers, cross-chain governance, and generalized message passing. It is one of the most widely adopted bridge protocols, securing billions in cross-chain transfers.