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Developer Tools · head to head

Harness vs Proxmox VE

Harness logo

Harness

Developer Tools

Software delivery platform across CI, CD, security testing and cost management

From
Free
Free plan
Yes
Full reviewWebsite
Proxmox VE logo

Proxmox VE

Cloud

Open-source hypervisor combining KVM and LXC virtualisation

From
€120/year
Free plan
No
Full reviewWebsite

The short version

  • Only Harness has a free tier, so it costs nothing to try first.
  • Each has a real cost: Harness essentials and Enterprise pricing requires sales contact; no published rates; Proxmox VE per-socket licensing model: cost scales with CPU socket count, not vCore count, resulting in high costs for multi-socket servers
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Harness and Proxmox VE actually diverge.

Attributes where Harness and Proxmox VE differ
AttributeHarnessProxmox VE
Starting priceFree€120/year
Pricing modelfreemiumsubscription
Free tierYesNo
PlatformsWebLinux, Web, API, Self-hosted
CategoryDeveloper ToolsCloud

Identical on both: user rating (Not yet rated).

What people use each for

The jobs each tool is most often brought in to do.

Harness

  • Deploying apps to AWS, Azure, and Google Cloud with rollbacksnot Proxmox VE
  • Integrating security scanners throughout build pipelines before productionnot Proxmox VE
  • Automating cloud cost reduction and tracking unit-level expensesnot Proxmox VE
  • Enabling developers to provision infrastructure without operations bottlenecksnot Proxmox VE
  • Assessing deployment frequency and lead time productivity metricsnot Proxmox VE

Proxmox VE

  • Open-source datacenter virtualisation for hosting providers and cloud platformsnot Harness
  • Cost-sensitive enterprise virtualisation replacing commercial hypervisorsnot Harness
  • High-availability clustering for disaster recovery and business continuitynot Harness
  • Container deployments using LXC as lighter-weight alternative to Dockernot Harness
  • Hybrid VM and container workloads in a single management interfacenot Harness
  • Backup and archival infrastructure alongside primary virtualisationnot Harness

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Harness

  • Essentials and Enterprise pricing requires sales contact; no published rates
  • DevOps Essentials has no on-premises deployment option
  • Internal Developer Portal requires minimum 20 developer licenses
  • Pipeline execution history retention 6 months (Essentials) vs 25 months as add-on (Enterprise)

Proxmox VE

  • Per-socket licensing model: cost scales with CPU socket count, not vCore count, resulting in high costs for multi-socket servers
  • Linux-based host only; Windows hypervisors not supported, limiting adoption in Windows-focused organisations
  • Clustering and high-availability setup requires operational expertise and careful network configuration
  • Commercial support tiers limit advanced features (just-in-time access, network flow logs) to paid subscriptions
  • Smaller ecosystem of third-party plugins and integrations compared to VMware vSphere

Pricing, plan by plan

Harness

Free
  • FreeFree
    • Starter platform for software delivery lifecycle
    • Open source options available (Harness Open Source, Litmus Chaos)
  • Essentials$null/month
    • Growing organizations with small to mid-size teams
    • Packaged DevOps Essentials bundle
    • Continuous software delivery capabilities
  • Enterprise$null/month
    • Large-scale organizations
    • Pick any modules based on needs
    • Advanced features

Proxmox VE

€120/year
  • Community$120/year
    • Enterprise Repository access
    • Community forum support only
    • Per-socket subscription model
  • Basic$370/year
    • 3 support tickets per year
    • 1 business day response time
    • Stable updates and Enterprise Repository
  • Standard$550/year
    • 10 support tickets per year
    • 4-hour response time for critical issues
    • Remote SSH support and offline updates
  • Premium$1100/year
    • Unlimited support tickets
    • 2-hour response time for critical issues
    • Remote SSH support and offline updates

Which should you pick?

Choose Harness if

  • You want to start without paying.
Harness review

Choose Proxmox VE if

  • You work on Linux, Web, API, Self-hosted.
Proxmox VE review

Questions people ask

Is Harness or Proxmox VE better?
Neither clearly leads. Harness starts at Free and Proxmox VE at €120/year, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Harness or Proxmox VE?
Harness has a free tier; the other does not. Paid plans start at Free for Harness and €120/year for Proxmox VE.
Does Harness or Proxmox VE run on more platforms?
Harness runs on Web. Proxmox VE runs on Linux, Web, API, Self-hosted.
Can I use Harness for free?
Yes. Harness has a free tier, so you can try it without paying. Proxmox VE starts at €120/year.
What is Harness best used for?
Harness is most often used for deploying apps to aws, azure, and google cloud with rollbacks, integrating security scanners throughout build pipelines before production, automating cloud cost reduction and tracking unit-level expenses, enabling developers to provision infrastructure without operations bottlenecks. Of those, deploying apps to aws, azure, and google cloud with rollbacks and integrating security scanners throughout build pipelines before production are not what Proxmox VE is typically brought in for.

Answered from the vendors’ own pages

Harness: Is there a free Harness plan?

Yes, Harness offers a free plan for individual developers and small teams with open source options including Harness Open Source and Litmus Chaos.

Source
Proxmox VE: What is the licensing model for Proxmox VE?

Proxmox VE is open-source and free to deploy. Optional subscription tiers provide technical support, priority response times, and access to the Enterprise Repository for stable update channels. All tiers include identical virtualisation features.

Source
Harness: What are Harness's paid pricing tiers?

Harness offers Essentials for growing teams and Enterprise for large-scale organizations. Both require contacting sales for custom pricing. Pricing is based on modules and features selected.

Source
Proxmox VE: Can I run Proxmox VE without a support subscription?

Yes. Community Edition (€120/year per socket) provides Enterprise Repository access with community-based support through forums. The core Proxmox VE platform is fully functional without any subscription.

Source
Harness: Can Harness be deployed on-premises?

Enterprise plans include self-managed platform deployment option. DevOps Essentials bundle does not offer on-premises deployment.

Source
Proxmox VE: What hypervisors does Proxmox VE support?

Proxmox VE includes both KVM for full virtualisation and LXC for Linux containers. It does not support Xen or Hyper-V. Workloads on those platforms must be migrated or reimplemented.

Source
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