MetaMask Wallet Extension is a digital wallet and browser extension that allows users to interact with the Ethereum blockchain. It was launched in 2016 by ConsenSys, a blockchain software development company.
With Metamask, users can store, manage, and send Ethereum and other ERC-20 tokens, as well as interact with decentralized applications (dApps) that run on the Ethereum blockchain. Metamask also enables users to connect to various Ethereum networks, including the mainnet, testnets, and private networks.
Metamask works as a browser extension, which means that it can be easily installed on popular browsers such as Chrome, Firefox, and Brave. Once installed, users can create a new Ethereum wallet or import an existing one, and start using Metamask to interact with Ethereum-based applications.
Overall, Metamask has become a popular tool among Ethereum users due to its ease of use and integration with various Ethereum-based applications.