OMS is the pre-eminent ERP & CRM, business software solution for the exclusive use of more than 4,000 wholesale distributor companies around the world. Since 1987, Master System has been at the forefront of continuous and never ending development of our OMS and eMaster business software solutions for wholesale distributors. Master System's OMS is a world-class ERP, CRM, inventory control with integrated accounting application that was the first to fully-integrate the wholesale distributor's back-office via the Internet with eCommerce, B2C & Business-to-Business. Today, OMS remains unmatched for its ease-of-use, ease-of-deployment, customization, and low cost of ownership with versatility and adaptability that delivers significant gains in performance and efficiency.