This document discusses business models for makers and open hardware projects. It provides examples of companies and organizations that produce open hardware, including Arduino, Bug Labs, and Sparkfun. Key metrics are presented from Adafruit in 2012, including that over 300 open source hardware projects generated over $50 million in revenue, with some projects making over $1 million. Successful business strategies for open hardware companies discussed include low-cost hosting, international shipping, documentation, and community support. The document also examines the Etsy business model and how peer production and open standards can support maker marketplaces.