MetaMask is a software cryptocurrency wallet used to interact with the Ethereum blockchain. It allows users to access their Ethereum wallet through a browser extension or mobile app, which can then be used to interact with decentralized applications. MetaMask is the leading self-custodial wallet. The safe and simple way to access blockchain applications and web3. Trusted by millions of users worldwide. The MetaMask Wallet has been widely known as a cryptocurrency wallet that enables you to store various varieties of cryptocurrencies. Whether you are an experienced user or brand new to blockchain, MetaMask helps you connect to the decentralized web: a new internet.