Cardano (ADA), Ripple (XRP), and Rexas Finance (RXS) are top altcoins to watch in 2025.Cardano (ADA) has great growth potential with a favorable trend and solid market traction.Ripple (XRP) is gaining momentum in the market with promising signals for a bullish breakout.Rexas Finance (RXS) is a standout altcoin priced below $0.30, with significant presale success and innovative tokenizing approach.