<ul data-eligibleForWebStory="false">Best altcoins to buy now include Uniswap, Bitcoin Hyper, and TRON, poised for significant gains.Uniswap (UNI) is a decentralized trading hub with an upcoming 'V4' upgrade, set to reduce gas fees significantly.Bitcoin Hyper (HYPER) integrates Solana's speed into Bitcoin, offering instant transactions and high APY for investors.TRON (TRX) is ranked eighth globally, handling high transactions with low fees and expanding into stablecoin use and a U.S. public listing.