There are thousands of cryptocurrencies beyond Bitcoin, known as "altcoins.

Bitcoin remains the most prominent cryptocurrency with a market cap of $507 billion.

Ethereum (ETH) ranks second with a market cap of $201 billion, known for its smart contract capabilities.

Tether (USDT) is a stablecoin with a price fixed at $1 and a market cap of $83 billion.

Binance Coin (BNB) has a market cap of $32 billion and is associated with the Binance exchange.

XRP (XRP), formerly Ripple, focuses on cross-border transactions and has a market cap of $28 billion.

USD Coin (USDC) is another stablecoin pegged to the dollar, with a market cap of $26 billion.

Cardano (ADA) is a platform with a market cap of $9 billion, known for its smart contracts.

Dogecoin (DOGE) started as a joke but has a market cap of $9 billion and unlimited issuance.

Solana (SOL), a newer cryptocurrency, emphasizes speed and has a market cap of $9 billion.

Tron (TRX) aims to decentralize the internet and has a market cap of $7 billion.

Polkadot (DOT) connects various blockchain technologies and has a market cap of $5 billion.

Dai (DAI) is a dollar-backed stablecoin on the Ethereum blockchain with a market cap of $5 billion.

Cryptocurrency trading is highly volatile, and caution is advised when investing.