MetaMask is a digital wallet that offers a secure and user-friendly gateway to decentralized applications. It features a key vault, secure login, token wallet, and token exchange, enabling users to manage their digital assets all in one place. Beyond supporting Ethereum and its ecosystem, MetaMask is compatible with several Ethereum-based Layer 2 networks, such as Polygon, Optimism, Arbitrum, zkSync, Celo, and Avalanche, which together represent the bulk of global smart contract activity.
MetaMask is available as a browser extension for Chrome, Firefox, Brave, and Edge, as well as a mobile app for Android and iOS. With MetaMask, users can safely and easily interact with blockchain-based applications.