Investors are seeking alternatives to Dogecoin (DOGE) for potential growth in the crypto market.Four noteworthy replacements to consider with significant returns are Rexas Finance (RXS), Mantle (MNT), Cardano (ADA), and Hedera (HBAR).Rexas Finance focuses on bridging blockchain with real-world assets, providing fractional ownership and various DeFi tools.Mantle Network offers an advanced scaling solution for Ethereum, while Cardano and Hedera present strong fundamentals and enterprise-grade features.