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Cloud · head to head

Proxmox VE vs Vault

Proxmox VE logo

Proxmox VE

Cloud

Open-source hypervisor combining KVM and LXC virtualisation

From
€120/year
Rated
-
Full reviewWebsite
Vault logo

Vault

Cloud

Manage Secrets and Protect Sensitive Data

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Vault has a free tier, so it costs nothing to try first.
  • Each has a real cost: Proxmox VE per-socket licensing model: cost scales with CPU socket count, not vCore count, resulting in high costs for multi-socket servers; Vault vault 1.15.0 and later is licensed under the Business Source License 1.1, not an OSI open source licence, with IBM Corporation as licensor
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where Proxmox VE and Vault differ
AttributeProxmox VEVault
Starting price€120/yearFree
Pricing modelsubscriptionopen-source
Free tierNoYes
PlatformsLinux, Web, API, Self-hostedLinux, Windows, Mac, Cloud
FoundedUnknown2015

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

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Proxmox VE

Nothing recorded that Vault does not also cover.

Only in Vault

  • Secrets management
  • Encryption
  • Authentication
  • Authorization
  • Audit logging
  • API access
  • High availability
  • Replication

What people use each for

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

Proxmox VE

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

Vault

  • Centrally storing and rotating secrets, API keys and database credentialsnot Proxmox VE
  • Issuing short-lived dynamic credentials to applications instead of static passwordsnot Proxmox VE
  • Encryption as a service and PKI certificate issuancenot Proxmox VE

Where each one falls short

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

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

Vault

  • Vault 1.15.0 and later is licensed under the Business Source License 1.1, not an OSI open source licence, with IBM Corporation as licensor
  • The Additional Use Grant forbids offering Vault to third parties on a hosted or embedded basis in a paid product that competes with IBM's paid versions of Vault
  • Each version only converts to MPL 2.0 four years after that version is published, and the Change Date is tracked per version
  • Replication, HSM support, namespaces, performance standby nodes, FIPS builds, control group authorisation, multi-factor authentication, secrets sync and lease count quotas all require a Vault Enterprise licence
  • A Vault Enterprise licence must be applied to the cluster before any Enterprise feature can be used

Pricing, plan by plan

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

Vault

Free
  • Open SourceFree
    • Secrets management
    • Encryption as a service
    • Identity management
  • EnterpriseFree
    • Advanced features
    • Premium support
    • Dedicated updates

Which should you pick?

Choose Proxmox VE if

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

Choose Vault if

  • You need secrets management.
  • You want to start without paying.
  • You work on Linux, Windows, Mac, Cloud.
  • You also want encryption.
Vault review

Questions people ask

Is Proxmox VE or Vault better?
Neither clearly leads. Proxmox VE starts at €120/year and Vault at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Proxmox VE or Vault?
Vault has a free tier; the other does not. Paid plans start at €120/year for Proxmox VE and Free for Vault.
Does Proxmox VE or Vault run on more platforms?
Proxmox VE runs on Linux, Web, API, Self-hosted. Vault runs on Linux, Windows, Mac, Cloud.
Can I use Vault for free?
Yes. Vault has a free tier, so you can try it without paying. Proxmox VE starts at €120/year.
What is Proxmox VE best used for?
Proxmox VE is most often used for open-source datacenter virtualisation for hosting providers and cloud platforms, cost-sensitive enterprise virtualisation replacing commercial hypervisors, high-availability clustering for disaster recovery and business continuity, container deployments using lxc as lighter-weight alternative to docker. Of those, open-source datacenter virtualisation for hosting providers and cloud platforms and cost-sensitive enterprise virtualisation replacing commercial hypervisors are not what Vault is typically brought in for.
What can Proxmox VE do that Vault cannot?
Vault covers Secrets management, Encryption, Authentication, Authorization.

Answered from the vendors’ own pages

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
Vault: Is HashiCorp Vault free to use?

Yes, Vault is available as a free, open-source project. The community version includes secrets management, certificate generation and rotation, encryption services, and credential management. Vault Enterprise is a commercial offering with additional features.

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
Vault: What are the differences between open-source Vault and Vault Enterprise?

Open-source Vault is free and self-hosted. Vault Enterprise includes additional features and commercial support. HashiCorp also offers Vault Dedicated on the HashiCorp Cloud Platform as a fully managed cloud option.

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
Vault: Can I try HashiCorp Cloud Platform Vault without payment?

Yes, HashiCorp offers a free trial option for HCP Vault Dedicated. New users also receive a $500 credit to use across HashiCorp Cloud Platform services.

Source
Vault: What does Vault manage and protect?

Vault provides identity-based secrets management for users, machines, services, and AI agents. It automates authentication and authorization for access to secrets, passwords, certificates, encryption keys, and other sensitive data across your infrastructure.

Source
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