MetaMask Wallet:

MetaMask is a web browser extension and mobile app that allows you to manage your Ethereum private keys. By doing so, it serves as a wallet..

MetaMask lets you create and manage your own identities (via private keys, local client wallet and hardware wallets like Trezor™). When a Dapp wants to perform a transaction and write to the blockchain, you get a secure interface to review that transaction before approving or rejecting it.