Mirantis is a pure play OpenStack company, delivering all the software, services, training, and support needed for running OpenStack in production at scale.
From their website:
Mirantis OpenStack features Fuel, the official OpenStack management software. Developed as an OpenStack community effort, it provides an intuitive, GUI-driven experience for automated deployment and management of OpenStack, related community projects and plugins. Adapt your environment directly within Fuel with improved lifecycle management, while overseeing your day-to-day operations with StackLight, the logging, monitoring and alerting solution created by Mirantis.
Mirantis OpenStack is a flexible and commercially-supported OpenStack distribution that gives enterprises the widest selection in choice of supported operating systems, hypervisors and storage back-ends. Mirantis OpenStack integrates core OpenStack components, essential related OpenStack projects and 3rd party plug-ins, in a single, commercially-supported package.
Mirantis has helped build and deploy some of the largest OpenStack clouds at companies such as AT&T, Cisco WebEx, Comcast, Dell, The Gap, NASA, NTT Docomo, PayPal, Red Hat, Sprint and Verizon.
For more see: http://www.mirantis.com/