Connext

Connext is a modular interoperability protocol designed to enable secure, fast, and developer-friendly cross-chain interactions. It allows users to bridge funds seamlessly across multiple Layer 1 and Layer 2 blockchains, including Ethereum, Binance Smart Chain, Arbitrum, Polygon, Gnosis, Optimism, Linea, Metis, and Base, with support for more chains like Scroll, zkSync, and Avalanche coming soon. Connext’s core innovation is its intent layer, which facilitates lightning-fast cross-chain transactions with low fees (targeting under 20 basis points) and latency under 60 seconds. This makes it suitable for applications requiring quick and cost-effective interoperability.

Developers benefit from Connext’s Chain Abstraction Toolkit, which simplifies building cross-chain applications that work with any token on any supported chain. The protocol also introduces xCall, a powerful primitive enabling asynchronous Solidity calls across chains, allowing developers to build complex cross-chain logic that was previously difficult or impossible. Additional features include xERC20 for deploying cross-chain native tokens with zero slippage and xAirdrop for distributing tokens across chains efficiently.

What sets Connext apart is its security model, which inherits security guarantees from canonical bridges, ensuring that cross-chain data and transactions remain secure. Its modular architecture and open-source nature foster strong developer support and community involvement. Use cases range from restaking tokens across Layer 2s in a single transaction to building next-generation DeFi protocols with cross-chain liquidity, cross-chain NFTs that move seamlessly, and cross-chain governance tools. Developers can get started quickly using the comprehensive documentation and SDKs, with active community support available via Discord and GitHub.