What coins can I add to MetaMask?

Fungible token standards play a crucial role in the cryptocurrency ecosystem. Among the most popular is the ERC-20 token standard, which has become the de facto standard for tokens issued on the Ethereum blockchain. These tokens are interchangeable and can be easily traded on exchanges.

ERC-20 tokens have gained immense popularity due to their compatibility with a wide range of wallets and exchanges. MetaMask, a popular Ethereum wallet, supports ERC-20 tokens, allowing users to store, send, and receive these tokens seamlessly. This compatibility has contributed to the widespread adoption of ERC-20 tokens.

Elastic supply / Rebase / Algorithmic tokens are another innovative type of fungible token. These tokens adjust their supply in response to market conditions, aiming to maintain a stable price. Rebase tokens, for example, periodically adjust their supply to keep the token's price pegged to a specific asset.

Another significant token standard is ERC-777, which aims to improve upon the functionality of ERC-20 tokens. ERC-777 tokens introduce new features such as token hooks, which allow tokens to interact with contracts in more complex ways. This increased functionality can lead to more sophisticated smart contracts and decentralized applications.

Wrapped tokens are another type of fungible token that has gained traction in recent years. These tokens represent assets that exist on other blockchains but are wrapped to be used on the Ethereum blockchain. For example, Wrapped Bitcoin (WBTC) allows Bitcoin to be used on Ethereum-based decentralized finance (DeFi) applications.