Red Hat, Inc.
Red Hat tips its cap to businesses that embrace open-source computing tools. The company dominates the market for Linux, the open-source computer operating system (OS) that is the chief rival to Microsoft's Windows operating system. In addition to its Red Hat Enterprise Linux OS, the company's product line includes database, content, and collaboration management applications; server and embedded operating systems; and software development tools. Red Hat also provides consulting, custom application development, support, and training services. The company's business model is a mix of providing free, open-source software paired with subscription-based support, training, and integration services.