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.
Credits (CS) cryptocurrency was launched in 2018. Being originally based on cryptocurrency Ethereum protocol, this cryptocurrency underwent a swap to the native mainnet. As a result, there are two assets are functioning at the same time: ERC20 CS token and CS coin. Credits token can be purchased in the number of exchanges for cryptos and is available with various wallet applications.