Red Hat Application Stack is the first fully integrated open source stack. Simplified, delivered, and supported by the open source leader. It includes everything you need to run standards-based Web and enterprise applications. All bundled and sold as a per-server subscription, delivered through Red Hat Network, and offered with up to 24x7 premium support.

SUSE Linux Enterprise Server is an enterprise-quality server designed to handle mission-critical workloads in the data center. Developed and backed by Novell, only SUSE Linux Enterprise Server offers an open, scalable, high-performance data center solution that comes with application security, virtualization and integrated systems management across a full range of hardware architectures.