The global business-to-business (B2B) eCommerce market is set to double by 2023, and the B2B market is estimated to be around $13 trillion. As businesses look for ways to streamline their processes and increase revenue, the growth of B2B eCommerce platforms is becoming increasingly important. To help your business grow, here is a list of the 10 best B2B eCommerce websites where companies go to source their products.