Dropil (DROP) is an Ethereum token and works as a utility token for the Dropil platform. No more Dropil tokens will ever be created, which is supposed to prevent further deflation. You can buy Dropil (DROP) for cryptos (for example, BTC or ETH) with some exchange platforms.
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.