NXT is one of the early cryptocurrencies and was started in 2013. As the Jelurida project’s website states, it was the “first to rely entirely on the PoS protocol”. It is currently listed by the number of exchanges.
Nebulas (NAS) coin is based on its own blockchain and functions as the native utility token of the Nebulas system. This cryptocurrency is featured by the number of exchanges.
MinexCoin (MNX) is the fuel coin of the MinexCoin payment platform. At the time of writing, you’ll be able to trade MNX against USD on the Exmo exchange and trade it against other cryptos of a few other exchange platforms. MNX can be mined.