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There is two entirely different topics: The Checkmk appliance and the Checkmk software. Read on for the disambiguation.
Checkmk Appliance
The Checkmk appliance is an operating system in a can. It is merely a platform to run the Checkmk software on, if your organization is not Linux-savysavvy.
There are two flavors of the appliance: A virtual template in OVA format and a physical server.
Both flavors contain - among others - the following features:
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The Checkmk Demo appliance is a publicly available version of the virtual appliance. It is intended for testing and concept proofing only.
Its limitations are:
- You can only install the Checkmk Free Edition
- You cannot get root access
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