MetaMask is a popular browser extension that serves as a digital wallet for managing Ethereum-based assets and decentralized applications (dApps). By integrating seamlessly with web browsers, MetaMask enables users to store, send, and receive cryptocurrencies, as well as interact with blockchain applications directly from their browser. The extension enhances security by providing a user-friendly interface for private key management and transaction authentication, while also supporting a wide range of tokens and decentralized finance (DeFi) platforms. With its robust features and ease of use, MetaMask has become an essential tool for anyone involved in the Ethereum ecosystem.