Metamask is a cryptocurrency wallet that can be used in your browsers like Chrome, Firefox, and Brave. It also works as a browser extension, which means that it bridges the gap between normal browsers and the Ethereum blockchain. This wallet is used to store Ethere keys and ERC20 tokens in three different web browsers. Users will be able to navigate the Ethereum blockchain from a common browser.
To date, Metamask has proven to be quite safe. It has not suffered any damage or attacks that have resulted in theft of cryptocurrencies by hackers. It also has the solid support of a community of developers who update their source code to the minimum error they detect.
In conclusion, it is a great wallet, very complete, it allows an infinity of tokens, recommended and safe.