As found out by about Cardano, it is a decentralized open source cryptocurrency network which runs a public cryptocurrency ledger platform for smart contracts, Ada is its interior cryptocurrency and it is a third generation cryptocurrency ledger and it has peeped into Ethereum to make improvements.
Cardano creates multiple layers of operation thereby having no limit to scaling,its mode of operation is friendly and fair, its code is bugs and weaknesses proof. Cardano's platform is more reliable, scalable and decentralized, it uses proof of stake system instead of proof of work system which makes it more safe and secured plus flexible. It was launched in 2017.
I therefore submit it is a fast growing one and quiet promising secure and flexible for anyone to use.