Or are you looking for a type of reseller platform similar to what ResellerClub offers? (pre-built site, products, etc.) If so, you may want to take a look at Resell.biz which offers a similar solution.
There is nothing unlimited hosting. Its just a marketing term. So, be careful from Unlimited hosting.
If you want to sell Unlimited hosting, get a reseller hosting with overselling enabled.
BTW, what problem you are facing with ResellerClub??
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