Advancements in 3D printing stand poised to revolutionize the way mass-produced products are designed and made. With this technology, product makers can accelerate time-to-market, reduce supply chain costs, increase returns on parts, and enable mass customization. Meanwhile, barriers to entry in manufacturing will decrease, allowing new competitors to drive disruption. Business leaders at manufacturing companies should use this review of 38 3D printing vendors to understand the capabilities within the 3D printing market segments and inform their technology strategies.