Currently, I use just one free mining platform and it is Stormgain. The major drawback of this platform is you cannot withdraw mining rewards, you will have to trade and can withdraw trading profits only.
In the past I used a similar platform called Eo.Finance. This platform offered free Monero mining. I stopped using it because it had very high withdrawl charges. You would end up giving away almost 50 percent of your mining reward.
In the past I used a similar platform called Eo.Finance. This platform offered free Monero mining. I stopped using it because it had very high withdrawl charges. You would end up giving away almost 50 percent of your mining reward.