Cardano is described as 'Proof-of-Stake L1 blockchain platform - the first to be founded on peer-reviewed research and developed through evidence-based methods' and is a cryptocurrency coin in the bitcoin & cryptocurrency category. There are more than 50 alternatives to Cardano, not only websites but also apps for a variety of platforms, including Linux, Mac, Windows and Android apps. The best Cardano alternative is Monero, which is both free and Open Source. Other great sites and apps similar to Cardano are Bitcoin, Ethereum, Litecoin and NameCoin.