FREEDOM251

Freedom251 › Cloud Infrastructure as a Service (Cloud IaaS) Software

OpenNebula

by OpenNebula

Free plan APILinuxSelf-hostedWeb

Visit OpenNebula Alternatives Pricing

OpenNebula's own site

What OpenNebula is

OpenNebula is a cloud and virtualization management platform for organizations running infrastructure across on-premises, public cloud, and edge environments. Its control plane brings KVM virtual machines and Kubernetes clusters into one managed environment, with LXC container virtualization also supported. It runs on Linux distributions including RHEL, Ubuntu, Debian, and AlmaLinux. Teams can manage deployments through a web interface, command-line tools, or REST, gRPC, and XML-RPC APIs. The platform supports live migration and disaster recovery, alongside high-availability capabilities such as redundant control-plane components, hypervisor-node failover, and VM replication and recovery workflows across data centers. For AI and HPC workloads, it supports GPU scheduling with vGPU and MIG and describes integrations with NVIDIA technologies. Other listed integrations include SUSE, NetApp, Veeam, Everpure, and NVIDIA Spectrum-X; its provider catalog includes IONOS, OVHcloud, Scaleway, and Stackscale. OpenNebula is open source, and its Community Edition includes the core platform. Certain tested and certified enterprise releases are available to subscribers. Enterprise subscriptions include unlimited CPUs, cores, and VMs, with Standard and Premium support options. The software is available for Linux, web, API, and self-hosted use.

Who it suits

OpenNebula suits organizations building enterprise clouds or AI factories across hybrid-cloud and edge deployments. It is relevant to teams that need to manage KVM and Kubernetes environments together and use web, command-line, or API interfaces.

What it does well

  • Combines KVM virtual machines and Kubernetes clusters in one environment.
  • Manages on-premises, public cloud, and edge infrastructure.
  • Supports live migration and disaster recovery.
  • Offers vGPU and MIG scheduling for AI and HPC workloads.
  • Community Edition includes the core platform.

What to know first

  • Enterprise subscription pricing requires a tailored proposal.
  • Enterprise releases and support require a subscription.

Plans

PlanBilled and limitsPrice
Community EditionComplete core platform · Public open-source releases · No stated host limitOn request
Community EditionComplete core platform · Public open-source releases · No stated host limitOn request
Enterprise Subscription — StandardUnlimited CPUs, cores, and VMs · 9×5 supportOn request
Enterprise Subscription — StandardUnlimited CPUs, cores, and VMs · 9×5 supportOn request
Enterprise Subscription — PremiumUnlimited CPUs, cores, and VMs · 24×7 supportOn request
Enterprise Subscription — PremiumUnlimited CPUs, cores, and VMs · 24×7 supportOn request
OpenNebula Enterprise SubscriptionTailored proposal · Unlimited CPUs, cores, and VMs · Standard: 9×5 SLA support (CET, EST) · Premium: 24×7 SLA support (CET, EST)On request

As opennebula.io lists them, read 20 Sept 2026. The maker's own page has the final word.

Getting started

  1. Visit the OpenNebula website.
  2. Choose the Community Edition or an enterprise subscription.
  3. Deploy on Linux or use the web interface, command-line tools, or APIs.

Verdict

Choose OpenNebula if you need a unified platform for virtualization and cloud infrastructure across on-premises, public cloud, or edge environments. The Community Edition provides the core platform, while enterprise support and subscriber-only releases require a subscription. Look elsewhere if you need a published subscription price.

Questions

Is OpenNebula free?

OpenNebula offers a free plan, and the Community Edition includes the core platform.

What platforms does OpenNebula support?

It supports Linux, web, API, and self-hosted use. It runs on distributions including RHEL, Ubuntu, Debian, and AlmaLinux.

Is OpenNebula open source?

Yes. The software is open source. Certain tested and certified enterprise releases are available exclusively to subscribers.

How much do the enterprise subscriptions cost?

The subscriptions page offers a tailored proposal and does not state a price.

What support comes with enterprise subscriptions?

Standard offers 9×5 SLA-backed support, and Premium offers 24×7 support in CET and EST. Both plans include unlimited CPUs, cores, and VMs.

Facts from OpenNebula's own pages

AI workloads
OpenNebula supports GPU scheduling with vGPU and MIG and describes integrations with NVIDIA technologies for AI and HPC workloads. · docs.opennebula.io, 30 Sept 2026
Enterprise releases
The software is open source, while certain tested and certified enterprise releases are available exclusively to subscribers. · opennebula.io, 30 Sept 2026
Founded
2005 · opennebula.io, 23 Sept 2026
Free plan
Yes · opennebula.io, 20 Sept 2026
Headquarters
Pozuelo de Alarcón, Madrid, Spain · opennebula.io, 23 Sept 2026
High availability
Its high-availability features include redundant control-plane components, hypervisor-node failover, and VM replication and recovery workflows across data centers. · docs.opennebula.io, 30 Sept 2026
Hybrid cloud
It manages infrastructure across on-premises, public cloud, and edge environments through a unified control plane. · opennebula.io, 30 Sept 2026
Integrations
The maker lists integrations including NVIDIA Spectrum-X, SUSE, NetApp, Veeam, and Everpure. · opennebula.io, 30 Sept 2026
Intended users
The maker describes OpenNebula as a platform for organizations building enterprise clouds and AI factories, including hybrid-cloud and edge deployments. · opennebula.io, 30 Sept 2026
Management interfaces
The platform provides a web GUI, command-line tools, and REST, gRPC, and XML-RPC APIs. · docs.opennebula.io, 30 Sept 2026
Pricing
The subscriptions page offers a tailored proposal and does not state a price. · opennebula.io, 30 Sept 2026
Provider integrations
The provider catalog lists certified hosted-cloud providers including IONOS, OVHcloud, Scaleway, and Stackscale. · opennebula.io, 30 Sept 2026
Security and compliance
OpenNebula Systems says its security processes align with ISO 27001:2022 and Spain’s National Security Framework requirements. · support.opennebula.pro, 30 Sept 2026
Subscription support
Enterprise support includes unlimited service tickets, with Standard offering 9×5 SLA-backed support and Premium offering 24×7 support in CET and EST. · opennebula.io, 30 Sept 2026
Virtualization
OpenNebula supports KVM virtualization and LXC container virtualization and runs on major Linux distributions including RHEL, Ubuntu, Debian, and AlmaLinux. · docs.opennebula.io, 30 Sept 2026
What it does
OpenNebula is an end-to-end cloud and virtualization management platform that unifies KVM virtual machines and Kubernetes clusters in one environment. · opennebula.io, 30 Sept 2026

Where OpenNebula stands on Freedom251

Look at these too