Unobtanium is a Proof-of-Work (PoW) cryptocurrency that uses the SHA-256 hashing algorithm. It was designed to serve as a commodity and store of wealth that would be less vulnerable to price fluctuations. The coin's supply is limited to counter inflation, and UNO coins were distributed in a manner that would discourage centralization. UNO can be merge-mined with Bitcoin.

OKCash is a Proof of Stake cryptocurrency that was released under the MIT licence.

TransferCoin is a digital currency with a hybrid PoW and PoS consensus mechanism. TransferCoin uses the X11 encryption algorithm and has a relatively fast block time.