MetaMask
MetaMask is a cryptocurrency wallet and browser extension that allows users to interact with the Ethereum blockchain and decentralized applications (dApps). It provides a secure interface for managing Ethereum accounts, storing digital assets, and signing transactions directly from a web browser. As a key tool in the Web3 ecosystem, it simplifies access to decentralized finance (DeFi), NFTs, and other blockchain-based services.
Developers should learn MetaMask when building or interacting with Ethereum-based dApps, as it is the most widely used wallet for browser-based Web3 applications. It is essential for testing smart contracts, handling user authentication via wallet connections, and enabling cryptocurrency transactions in decentralized applications. Use cases include DeFi platforms, NFT marketplaces, and any application requiring blockchain integration.