Side by side

JamaicaVM vs XCP-ng Center

Both stand on virtual machine software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

JamaicaVM

Free trial LinuxMacWindows

JamaicaVM combines Java compatibility with realtime specifications, managed memory and target-specific compilation. Review supported hardware and RTOS options with aicas before licensing.

Visit JamaicaVM

XCP-ng Center provides host, pool, and virtual machine management for Windows, with both installer and portable options. Its deprecated, unsupported status and settings migration change are important considerations.

Visit XCP-ng Center

The facts

	JamaicaVM	XCP-ng Center
Free plan	Not published	Yes
Open source	Not published	Not published
Runs on	Linux, Mac, Windows	Windows
Lowest paid plan	Free or on request	Not published
Plans published	1	None
Maker	JamaicaVM	Not published
Website	aicas.com	xcp-ng.org
On virtual machine software	#21 of 24	#17 of 24

JamaicaVM: what it does well

Supports Java, Kotlin, Clojure and Scala
Reference implementation of Java RTSJ
Deterministic managed memory
Ahead-of-Time compilation with dynamic JAR loading
Linux, QNX and VxWorks targets

What to know first

Windows and macOS builds lack realtime functionality
Pricing requires contacting aicas
RISC-V support is limited to Linux
Other target combinations require availability checks

XCP-ng Center: what it does well

Manages XCP-ng and Citrix XenServer environments.
Can deploy and migrate virtual machines.
Free and open source under BSD 2-Clause.
Can run portably with settings and logs beside the executable.
The v25.04 release includes an MSI installer.

What to know first

Documented as deprecated and unsupported.
Community members maintain it in their free time.
Builds 25054 and later do not migrate previous settings.
Xen Orchestra is identified as the official XCP-ng graphical client.

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