TON is a third-generation proof-of-stake blockchain designed in 2018 by the Durov brothers, the founders of Telegram Messenger. Later, it was handed over to our open TON Community, which has been supporting and developing it ever since.
TON was designed for lightning-fast transactions. It's ultra-cheap, user-friendly, and fully operational.
Horizen (ZEN) is the native cryptocurrency of Horizen blockchain. It can be mined. Much alike Zcash, ZEN offers regular and shielded addresses. A number of exchanges feature ZEN, including USD as a pairing choice on Bittrex.