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

WhiteCoin is a cryptocurrency protocol with a Proof-of-Stake (PoS) consensus mechanism. WhiteCoin's (XWC) marketing materials place an emphasis on security and stability, but do not present details regarding their specific technical advantages or project goals.
WhiteCoin's payment network provides a high degree of anonymity and its PoS consensus model allows XWC coin holders to earn revenue by staking their holdings.

BitKan is a Chinese cryptocurrency site and trading platform with a strong following. Their Ethereum-based KAN token facilitates community cooperation among the site's followers.