Metamask extension is a cryptocurrency wallet and browser extension that allows you to interact with decentralized applications (DApps) on the Ethereum blockchain . serves as a digital wallet that allows users to store and manage their Ethereum-based assets, including Ether (ETH) and ERC-20 tokens..MetaMask is primarily a browser extension available for popular web browsers such as Chrome, Firefox, Brave, and Edge. https://sites.google.com/coinslogs.com/metamask-extension/home