MetaMask extension and Ethereum wallet that provides users with the ability to interact with dapps running on the blockchain.MetaMask is a browser extension and Ethereum wallet that provides users with the ability to interact with dapps running on the blockchain. It is designed as a plugin for Chrome browsers, but it can also be installed on Firefox or Opera through extensions compatible with those browsers.MetaMask is a browser extension and Ethereum wallet that provides users with the ability to interact with dapps running on the blockchain. It is designed as a plugin for Chrome browsers, but it can also be installed on Firefox or Opera through extensions compatible with those browsers.MetaMask is a browser extension and Ethereum wallet that provides users with the ability to interact with dapps running on the blockchain. It is designed as a plugin for Chrome browsers, but it can also be installed on Firefox or Opera through extensions compatible with those browsers.