TOPCOIN is a type of crypto-currency, released February 2nd, 2014, with which you can make instant person to person payments, anywhere in the world. TOPCOIN also has a built in staking feature that allows you to collect more coins if you have some in your wallet!
Novacoin is a hybrid Proof of work (POW) / Proof of stake (POS) decentralized peer-to-peer cryptocurrency.The Proof of Work part of Novacoin is based on the Scrypt hashing algorithm. Proof of Stake contributes to the coins energy efficiency, as there is no need for nodes to contribute mining power to part of the money creation process. As of now, Novacoin is set to be capped at 2 billion coins. However Novacoin stated that the cap limit may be lifted if the situation requires it. It looks very much like a variation of Sunny King Peercoin.