Pi Network, Monero, Braintree, TradeOgre, Multidoge, Ripple - Crypto Solutions, Litecoin, Dogecoin, FileCoin, Epoch, Bitcoin Cash, Ethereum, Yandex.Money, NameCoin, Stellite, Library Credits (LBC), Layer Protocol, decRED, Insolar, Nochex, feathercoin, BlackCoin, Safecoin, LiteVault, 42coin, ZCore, Vertcoin, Gridcoin, CryptoFights, PENG Coin, NovaCoin, HiveNet, Hexxcoin, Anoncoin, KIN Cryptocurrency, Peony Coin, Groestlcoin, Primecoin, Swarm City, FairCoin, Bytom, Peercoin, Bitcoin Unlimited, HonorPay, CureCoin are some alternatives to Cardano.