MetaMask is a popular Web3 wallet that allows users to interact with decentralized applications (dApps) on the Ethereum blockchain. It serves as a bridge between users and the Ethereum network, providing a secure and user-friendly interface to manage digital assets, send and receive cryptocurrencies, and interact with smart contracts.

MetaMask also acts as a browser extension, enabling seamless integration with various Ethereum-based dApps, making it a key tool for participating in the decentralized finance (DeFi) ecosystem and accessing the growing world of Web3 applications.