SparkLayer B2B & Wholesale

Personally, I think its the best B2B app out there. It looks like the site was natively made for wholesale, not just some ovelay slapped. And more important, the support is right there for you. Their documentation is highly detailed where most of the customization one can do themselves. To those who read a negative review about the tier set up. Yes, its a little more complicated, but thats because how the cart and pricing functions on the backend. For the little pain, in return, you will get a cart that is much quicker and smoother. I know this 1st hand, as I constantly struggled with it on a couple of other b2b apps.