Bitcoin gets all the headlines when people talk about cryptocurrencies, but there are literally thousands of other options when it comes to these digital currencies. In fact, cryptos that aren’t Bitcoin are usually considered an “also-ran” — what are called “altcoins,” or alternatives to Bitcoin.
While Bitcoin may have been the first major cryptocurrency to hit the market — it debuted in 2009 — many others have become highly popular, even if not quite as large as the original.
Here are the largest cryptocurrencies by the total dollar value of the coins in existence, that is, the market capitalization, or market cap. (Data is from CoinMarketCap.com as of March 6, 2025.)
As the harbinger of the cryptocurrency era, Bitcoin is still the coin people generally reference when they talk about digital currency. Its mysterious creator — allegedly Satoshi Nakamoto — introduced the currency in 2009 and it’s been on a roller-coaster ride since then. However, it wasn’t until 2017 that the cryptocurrency broke into broader popular consciousness. In 2024, the Securities and Exchange Commission (SEC) approved the trading of ETFs that invest directly in Bitcoin, giving investors an easy way to bet on Bitcoin.
Ethereum — the name for the cryptocurrency platform — is the second name you’re most likely to recognize in the crypto space. The system allows you to use ether (the currency) to perform a number of functions, but the smart contract aspect of Ethereum helps make it a popular currency.
Formerly known as Ripple and created in 2012, XRP offers a way to pay in many different real-world currencies. XRP can be useful in cross-border transactions and uses a trust-less mechanism to facilitate payments.
Tether’s price is anchored at $1 per coin. That’s because it is what’s called a stablecoin. Stablecoins are tied to the value of a specific asset — in Tether’s case, the U.S. dollar. Tether often acts as a medium when traders move from one cryptocurrency to another. Rather than move back to dollars, they use Tether. However, some people are concerned that Tether isn’t safely backed by dollars held in reserve but instead uses a short-term form of unsecured debt.
BNB is the cryptocurrency issued by Binance, one of the largest crypto exchanges in the world. While originally created as a token to pay for discounted trades, Binance Coin can now be used for payments, as well as purchasing various goods and services.