Futures are leveraged products and a prop affords you even more leverage. Given the risks involved in futures I doubt you will find any reputable firm allow you to trade futures with NO money down. Only people who would want to trade futures with no money down are beginners (too much risk to allow anyway) or someone who cannot scrape the $5k together needed at many brokerages to start trading one contract and if you dont have that much free cash you shoudl wait until you do before trading futures. If you are looking for no money down so you can learn, read and read and paper trade as there are many platforms you can test and paper trade with.