SparkLayer B2B & Wholesale

Having tried a few B2B apps, this one stands out as the best performer by a long way. It's on the same site as my retail business and integrates like it was built for my site. UX for the customer is excellent. Other apps feel like you're building a site around their features, this one takes your retail experience and gives it a B2B boost. Administration is very easy and the support team are excellent. This is a very well thought out solution for B2B on Shopify.