Altcoin is a term used to describe any cryptocurrency that is not Bitcoin. The term combines "alternative" and "coin" to indicate these are alternative digital currencies to the original cryptocurrency.
Categories of Altcoins include: Payment tokens designed for transactions (Litecoin, Bitcoin Cash), Platform tokens that power blockchain ecosystems (Ethereum, Solana), Utility tokens that provide access to services, Stablecoins pegged to fiat currencies, Meme coins created for entertainment, and Security tokens representing real-world assets.
Popular altcoins include Ethereum (ETH), Binance Coin (BNB), Solana (SOL), Cardano (ADA), and XRP. Each serves different purposes within the cryptocurrency ecosystem.
When investing in altcoins, consider factors like the project team, technology, use case, market capitalization, trading volume, and community support.