Mac OS X Server v10.4 - Unlimited Client version. Open source made easy. Support Mac and Windows workgroups. Deploy powerful Internet services. Host enterprise applications. And do it all without breaking a sweat. Only Mac OS X Server combines the latest technologies with Apple’s industry-leading manageability and ease of use. The result is a world-class, 64-bit, UNIX-based server platform that is easy and affordable to deploy and maintain. A complete suite of standards-based workgroup and Internet services—for file and print sharing, email, web hosting, directory services, and workgroup management—is included in the box, so you can get started right away.