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.
Emercoin (EMC) is the mineable coin based on the Emercoin’s own blockchain. You can convert these coins to other cryptos and back on a few exchanges. Emercoin was launched as early as in 2013 as the Peercoin’s fork.
The SONM (SNM) project was released in 2017. Cryptocurrency pairs with the SNM token are represented on the number of exchanges. SONM is currently based on cryptocurrency Ethereum protocol.