The Hardware Compatibility List shows systems and peripherals which are compatible with the Solaris OS.
There are 1142 systems
(1040 x86/x64 systems, 102 SPARC systems) and
1668 components currently listed.
There are 4032 systems listed for OpenSolaris.
When you View the HCL you will see collections of Servers, desktop and laptop systems and a selection of peripheral devices.
Sun offers Solaris Subscriptions for Solaris software running on all systems listed on the HCL - for information about available service offerings and details of the HCL program, see the HCL Overview.