MetaMask is a browser extension that allows you to manage your Ethereum wallet and interact with decentralized applications (dApps) without the need for a full Ethereum node. It is available for Google Chrome, Firefox, Opera, and Brave browsers. The MetaMask extension functions as a bridge between your browser and the Ethereum network, making it possible to easily send and receive Ether (ETH) and other ERC-20 tokens directly from your browser. MetaMask Extension | MetaMask Extension