MetaMask is the most widely used self-custody wallet for Ethereum and Web3 — a free browser extension and mobile app that's the default gateway to DeFi, NFTs, and thousands of dApps.
MetaMask is the front door to Web3. With over 30 million monthly users, it's the default wallet for interacting with Ethereum and the broader ecosystem of decentralized apps — if a DeFi protocol, NFT marketplace, or on-chain game supports a wallet, it supports MetaMask first. It's free, open-source, and fully non-custodial: your keys and seed phrase live on your device, not on Consensys's servers.
Historically EVM-only, MetaMask has expanded into a genuinely multichain wallet, adding native support for Solana and Bitcoin alongside Ethereum and every EVM network (Polygon, Arbitrum, Base, BNB Chain, and more). It bundles in token swaps, ETH staking, an NFT gallery, and a dApp browser on mobile, plus 'Snaps' — plugins that extend it to additional chains. For everyday on-chain activity, it's hard to beat the convenience and compatibility.
The crucial caveat is the nature of a hot wallet: because MetaMask runs on an internet-connected device, it's inherently more exposed than cold storage. The keys are only as safe as the machine they're on, and MetaMask users are prime phishing targets. The right setup pairs it with a hardware wallet — MetaMask connects to Ledger and Trezor, so you get its unmatched dApp access while keys stay offline on the device. Used that way, it's both the most useful and a properly secured wallet.
Essential for anyone using Web3 — the most compatible self-custody wallet there is, and free. Just treat it as a hot wallet: connect it to a Ledger or Trezor for any meaningful balance rather than storing large sums in the extension alone.
MetaMask is safe as software — it's open-source and non-custodial, so you control your keys. But it's a hot wallet on an internet-connected device, so it's exposed to phishing and malware. For larger holdings, connect it to a hardware wallet.
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