MetaMask

MetaMask is the world's most popular cryptocurrency wallet and gateway to Web3. As a browser extension and mobile app, it enables seamless interaction with Ethereum and EVM-compatible blockchains. ## The Web3 Standard MetaMask has become the de facto standard for connecting to decentralized applications. Nearly every DeFi protocol, NFT marketplace, and blockchain game supports MetaMask. ## Multi-Chain Support While originally Ethereum-only, MetaMask now supports all EVM-compatible networks: Polygon, Arbitrum, Optimism, BNB Chain, Avalanche, and hundreds more. Add any network with one click. ## Built-In Features MetaMask includes a swap aggregator for the best DEX prices, portfolio tracking, and direct NFT viewing. The mobile app offers a full dApp browser for on-the-go Web3 access. ## Security Considerations As a hot wallet, MetaMask is more vulnerable than hardware wallets. Always use a strong password, enable transaction previews, and consider connecting a hardware wallet for large holdings. ## Who Is This For? MetaMask is essential for anyone using Ethereum DeFi or NFTs. It's the starting point for Web3, though serious holdings should be backed by a hardware wallet.