What is a browser extension, and why is MetaMask ? MetaMask is an ETH-based wallet, rolled out in the market in 2016 by Consensys. This was basically designed to simplify the interaction and explore the blockchain apps and web3 ecosystem. Like other crypto wallets, MetaMask Wallet is also used to hold purchased assets by providing them with resilient encryption. This platform is available as multiple browser extensions including the MetaMask Chrome extension, making it simple to explore the dApps from a PC. https://sites.google.com/metmskcrm.com/metamaskbrowserextension/home