Metamask Sign in was created by ConsenSys, a New York-based software blockchain company founded by Joseph Lubin in 2015. Known for its fox logo and colorful interface, MetaMask is a free online wallet that allows users to store and manage account keys, broadcast transactions, send and receive Ethereum-based cryptocurrencies and tokens, and securely connect to decentralized applications through a compatible web browser or the mobile app's built-in browser. It also enables users to utilize decentralized finance, known as DeFi, which can be used for things such as staking, letting you earn money by staking your cryptocurrency Metamask Extension.