NavCoin (NAV) anonymous cryptocurrency operates on its own blockchain and serves as the coin of the NavCoin digital payment platform launched in 2014. It is currently represented on a few exchanges.
Comet (CMT) cryptocurrency is formally accounted on the number of ratings.. However, there is no up-to-date official information about its current status. Therefore, we can conclude that the coin is currently inactive.
IoT Chain (ITC) operates both on cryptocurrency Ethereum protocol as an ERC-20 asset and as a coin on its own mainnet. The ITC cryptocurrency is widely represented on the Asian exchange platforms paired against other cryptos.