MetaMask Extension is a browser add-on that serves as a cryptocurrency wallet and gateway to decentralized applications (dApps). It allows users to store, send, and receive Ethereum-based tokens securely. With an intuitive interface, MetaMask enables easy access to decentralized finance (DeFi) platforms, non-fungible tokens (NFTs), and blockchain networks, making it a crucial tool for Web3 enthusiasts. MetaMask Extension | MetaMask Extension