Sun Solaris 10 Operating System and Sun OpenSolaris 10 Operating System
Supported on over 1000 x86 and SPARC platforms—delivers the performance, stability and security your users and customers demand. With more applications available than for any other open operating system, one OS can span your entire enterprise: the Web tier, the data warehouse, and the most demanding technical compute applications.
Solaris appears to be free of charge (subject to the Legal Requirements below) while OpenSolaris is free libre open and free of charge !
Solaris Legal Requirements
The Solaris 10 code can be obtained via a free Web download, obtaining a Solaris 10 media kit through the Sun store, receiving Solaris 10 pre-installed on Sun systems, among other methods. Use of the operating system is governed by the terms of the Software License Agreement (SLA).
In order to use the Solaris 10 Operating System for perpetual commercial use, each system running the Solaris 10 OS must have an entitlement to do so. The Entitlement Document is delivered to you either with a new Sun system, from Sun Services as part of your service agreement, or via e-mail when you register your systems through the Sun Download Center.
In addition, if you install the Solaris 10 OS on additional systems, you must register those systems to receive an additional Entitlement Document.
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