MetaMask is a cryptocurrency wallet and browser extension that allows users to interact with the Ethereum blockchain. It provides a user-friendly interface for managing cryptocurrencies and decentralized applications (dApps). Key features of MetaMask include:

Cryptocurrency management: Users can store, send, and receive Ethereum (ETH) and other ERC-20 tokens.
Interact with dApps: MetaMask allows you to connect to various decentralized applications directly from your browser.
Security: The wallet is protected by a password and a seed phrase (recovery phrase), which allows you to restore access to the wallet in case of loss.
Compatibility: Supports various browsers, including Chrome, Firefox, and Brave, as well as mobile devices via the app.