What is the difference between FTN and FTNx?

Could you elaborate on the key differences between FTN and FTNx? As both seem to be involved in the cryptocurrency and finance sphere, I'm curious to understand the nuances that set them apart. Is there a significant difference in their functionality, purpose, or underlying technology? Additionally, could you shed some light on how they compare in terms of popularity, adoption, and potential for growth in the market? Your insights would be invaluable in helping me make an informed decision regarding these two options.