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proxmox.com

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Tags: Open Source

Proxmox develops powerful and efficient open-source server solutions like the Proxmox VE platform, Proxmox Backup Server, and Proxmox Mail Gateway.

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Updated: 2026-09-24 02:28 Language: English (default) Access: Normal

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Editorial Review

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What is Proxmox?

Proxmox is a family of open-source server products for running and protecting data center infrastructure. The three main pieces are Proxmox Virtual Environment (VE), a virtualization platform for virtual machines and containers; Proxmox Backup Server, for backing up and restoring workloads; and Proxmox Mail Gateway, for filtering email. A fourth product, Proxmox Datacenter Manager, is aimed at managing multiple installations from one place.

The site presents these as a way to “simplify your data center,” with enterprise support, partner-led implementation, training and documentation available alongside the software.

Who it is for

  • Homelab and small-business users who want a capable virtualization setup without a proprietary platform.
  • IT teams standardizing on open-source infrastructure and needing backup and email security as well.
  • Managed service providers and integrators who deploy and support data centers for clients.

What you actually get

  • Virtualization for running many workloads on shared hardware.
  • Backup tooling designed to work with those workloads.
  • Mail gateway filtering for incoming and outgoing email.
  • Optional commercial support, consulting, training and partner services.

Trade-offs to weigh

Open source means no license lock-in and a large community, but you supply the hardware, planning and operational skill. Enterprise support and partner services cost extra and are the practical route for organizations that need guaranteed response times. If you only need basic virtualization, VE alone may be enough; backup and mail gateway are separate products with their own pricing pages.

Next step

Decide which problem you are solving first — running workloads, protecting them, or filtering mail — then read the documentation or compare editions on the relevant product page. If you are evaluating it for a business, check the support and partner options early, since those shape the real cost and effort more than the software download itself.

How much does Proxmox cost for enterprise use?

Proxmox itself is open-source software you can download and run at no licence cost, so the real enterprise cost is not the software but the support subscription you choose. Proxmox sells subscriptions per physical CPU socket, per year, and the subscription level determines the response time and support channel rather than unlocking the core features. The product line covered by subscriptions includes Proxmox Virtual Environment (the hypervisor), Backup Server and Mail Gateway, each with its own price list.

What the subscription actually buys

  • Support response times — Basic, Standard and Premium tiers differ mainly in how fast you get an answer and whether support is available outside business hours.
  • A stable enterprise repository — subscribers get access to tested package updates rather than the community repository.
  • Predictable budgeting — a per-socket annual fee scales with your hardware, not with the number of virtual machines, which matters if you consolidate heavily.

How to decide

If you run Proxmox in production with uptime commitments, budget for at least the Standard tier on every socket in the cluster; a single unplanned outage usually costs more than the subscription. If you are labbing or running non-critical workloads, the no-cost community edition is legitimate and fully functional, but you accept community-forum support and less tested updates.

Because Proxmox prices per socket and per year, and the tiers change, the only reliable figure is the current list on the vendor's own pricing pages — check the Virtual Environment, Backup Server and Mail Gateway pricing pages directly, then multiply by your socket count and add any partner implementation or training costs you need.

Can Proxmox replace VMware vSphere in my existing data center?

Proxmox can replace vSphere for many data centers, but it is a migration project rather than a drop-in swap. Proxmox VE is a KVM-based virtualization platform with a web management interface, and it is positioned alongside Proxmox Backup Server and Proxmox Datacenter Manager as a data-center stack. That covers the core functions most vSphere users rely on: host management, virtual machines, backups and centralized administration.

Where it fits well

  • Mixed workloads where most VMs are Linux, or Windows VMs that can be re-validated on KVM drivers.
  • Smaller to mid-sized environments, branch sites, labs and secondary clusters.
  • Teams that want open-source code they can inspect and a community-driven roadmap.
  • Backup-centric designs, using Proxmox Backup Server as the target for VM and container backups.

Where the trade-offs appear

  • Operational habits change. vSphere administrators will need to relearn cluster, storage and network concepts in Proxmox VE.
  • Feature parity is not one-to-one. vSphere features such as DRS-style automated balancing, some distributed switching options and certain third-party integrations may have no direct equivalent, or may require a different design.
  • Enterprise support comes through Proxmox's support and partner services rather than a single vendor account team, so procurement and escalation paths may differ from what your organization is used to.
  • Any migration needs a pilot: test performance, backup and restore, high-availability behavior, and application compatibility before moving production.

A practical next step is to pick one non-critical cluster, install Proxmox VE on comparable hardware, and run your five most important VMs there for a month. Use that pilot to compare backup times, failover behavior and admin effort against vSphere. If the pilot holds up, expand cluster by cluster rather than attempting a single cutover. For official product details, start with Proxmox; if you also run VMware tooling, compare against VMware.

How do I get technical support or training for Proxmox?

Proxmox offers both enterprise support and training, but they serve different needs, so pick based on whether you're solving a live problem or building internal skills.

Technical support is aimed at organizations running Proxmox in production. Per the site, Proxmox Enterprise Support is positioned to "help you solve unexpected problems and ensure your business is running smoothly." If you're a business with production workloads, that's the path to take; if you're a hobbyist or lab user, the community and documentation are usually the more sensible route.

Training is described as "compact, practical, efficient" — intended to quickly give you the know-how to operate a data center with Proxmox solutions. It suits IT staff who are new to the platform or teams standardizing on it, rather than someone who just needs a one-off answer.

Implementation and consulting come through specialized partners, covering everything from conception to rollout of your data center strategy. Use this when you want outside help designing or migrating, not just troubleshooting.

Free routes worth knowing: comprehensive documentation for getting up and running, and the global community, which the site says continuously drives development forward. Developers can also contribute code, bug fixes and ideas.

Need Best fit
Production outage or urgent issue Enterprise Support
Team needs platform skills Training courses
Design, migration or rollout help Partner consulting/implementation
Self-service learning Documentation and community

A practical next step: decide whether your problem is operational (support), capability-building (training), or project-based (partner implementation), then start from the relevant Proxmox product support page. For a small team, a common sequence is documentation and community first, training once you commit to the platform, and enterprise support before you put critical workloads into production.

The official site is Proxmox.

What is the difference between Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway?

Proxmox's three main products address different layers of a data center: virtualization, backup, and email security. They share the same open-source philosophy and web-based management style, but they are not interchangeable.

What each product does

  • Proxmox Virtual Environment (VE) — The core platform for running virtual machines and containers on your own hardware. It is the piece you would use to consolidate physical servers, host internal services, or build a private cloud.
  • Proxmox Backup Server — A dedicated system for backing up and restoring data from virtual machines, containers, and physical hosts. It is the product you add when data protection, retention, and fast recovery become priorities.
  • Proxmox Mail Gateway — An email security gateway that filters spam, viruses, and other unwanted mail before it reaches your mail server. It sits at the network edge and is relevant only if you run your own email infrastructure.

How they differ in practice

Product Primary job Typical audience Main trade-off
Proxmox VE Run VMs and containers Sysadmins, homelab users, SMBs, enterprises You supply and maintain the hardware
Proxmox Backup Server Back up and restore workloads Anyone already running VMs or servers Adds another system to deploy and monitor
Proxmox Mail Gateway Filter inbound/outbound email Organizations running their own mail servers Only useful if you control a mail server

A useful way to think about it: VE creates workloads, Backup Server protects them, and Mail Gateway protects a specific service (email) rather than the infrastructure itself.

A concrete scenario

A small company replaces three aging physical servers with one Proxmox VE host running several VMs. Once those VMs hold business data, they add Proxmox Backup Server so a failed VM can be restored quickly. If the company also runs its own mail server, it may place Proxmox Mail Gateway in front of it to cut spam. A company using a hosted email service would have no reason to deploy Mail Gateway at all.

Next step

Start with the product that matches your immediate problem: virtualize first with VE, add Backup Server when recovery matters, and consider Mail Gateway only if email is self-hosted. You can compare editions and support options on the official pages for Proxmox and review the documentation before committing to a rollout.

Is Proxmox fully open source and free to use?

Yes—Proxmox's core products are open-source, and you can install and use them without paying a licence fee. The page presents three main products: Proxmox Virtual Environment (VE) for virtualisation, Proxmox Backup Server, and Proxmox Mail Gateway, plus a newer Proxmox Datacenter Manager. It states plainly that "Proxmox is committed to open source," and the community is invited to contribute code, bug fixes and ideas.

"Free to use" needs one qualification: Proxmox sells optional enterprise support and services. The page lists enterprise support, partner-led implementation and training, and each product has its own pricing page. So the software is free, while professional help is a paid extra.

What that means in practice

  • A homelab user can download and run Proxmox VE at no cost, using the documentation and community for help.
  • A small business can start free, then buy a support subscription if it needs guaranteed response times or help with unexpected problems.
  • An organisation that wants consulting or staff training can engage Proxmox partners rather than relying only on forums.

Trade-off to weigh

Free use means you largely own the operational risk: you plan upgrades, read the docs and troubleshoot with the community. Paid support shifts some of that risk to Proxmox or a partner. Neither is wrong—it depends on how much downtime your workloads can tolerate.

Next step: check the pricing page for the specific product you plan to run, so you know what support costs before you commit. If you are comparing options, Proxmox is the authoritative source for its own editions, and Linux Containers is a useful reference if you also use LXC-style containers.

Related questions

More questions →
What Are Open-Source UI Element Libraries and How Do They Differ From UI Frameworks?

An open-source UI element library is a collection of individual, ready-made interface pieces—buttons, cards, inputs, toggles, loaders—that you copy into your own project and adapt. A UI framework, by contrast, is a structured system of components, conventions, and often a theming layer that governs how your whole interface is built. The practical difference: an element library gives you a snippet; a framework gives you a way of working. If you need a polished button in ten minutes, reach for the element library. If you're building a 40-screen product with a team, you probably want the framework.

What "open-source UI element library" actually means

The term gets used loosely, so it helps to separate the parts:

  • Open-source: the code is publicly available, and the license tells you what you may do with it—copy, modify, redistribute, or use commercially.
  • UI element: a single, self-contained piece of interface, usually small enough to read in one sitting. A button with hover states, a pricing card, a search field.
  • Library: a browsable, searchable collection of those elements, typically contributed by many different people.

On a site like Uiverse, elements are shared by a community and written in plain CSS or Tailwind. You find one you like, copy the markup and styles, paste them into your project, and adjust colors, spacing, and text to fit. There's no package to install and no build step required—which is exactly the appeal, and also the source of most of the confusion.

Element library vs. UI framework: the core differences

Dimension Open-source UI element library UI framework / design system
Unit of reuse A single snippet you copy A component you import or call
Installation None; paste into your code Package install, config, sometimes a provider
Consistency Depends on you; each element may look different Enforced by shared tokens and APIs
Theming Manual edits per element Central theme/config file
Updates You own the copy; no upstream updates Version bumps bring fixes and changes
Accessibility Varies per contributor; must be checked Usually tested and documented
Best for Prototypes, landing pages, small sites, one-off needs Multi-page apps, teams, long-lived products
Learning curve Low—read the CSS Higher—learn the API and conventions

The table isn't a verdict. It's a map of trade-offs. Element libraries win on speed and freedom; frameworks win on consistency and maintenance.

Licensing and attribution: what to check before you paste

This is where people get into trouble, and it's worth slowing down for.

  1. Find the license. Every element or collection should state one. Common open-source licenses include MIT, Apache-2.0, and BSD. Some projects use copyleft licenses like GPL, which can impose obligations if you redistribute your code.
  2. Understand what the license permits. MIT and Apache-2.0 are permissive: you can typically use the code in commercial and closed-source projects. Copyleft licenses may require you to release derivative source under the same terms.
  3. Check attribution requirements. Permissive licenses usually require you to keep the copyright notice and license text somewhere in your project. That's a real obligation, not a formality.
  4. Look for per-element terms. On community sites, the site's overall terms and the individual contributor's stated wishes may differ. If a contributor asks for credit, honor it.
  5. When in doubt, ask or avoid. If a snippet has no license at all, you don't have clear permission to reuse it. Treat "no license" as "not open source," even if the code is publicly visible.

This article is general information, not legal advice. For commercial products with real exposure, have someone qualified review the licenses you're relying on.

How to use a community element in your project: a practical workflow

Here's a repeatable process that avoids most of the usual mess.

1. Start from a real need, not a browsing session

Decide what you need first—"a compact primary button with a loading state"—then search. Browsing aimlessly produces a pile of pretty snippets that don't fit together.

2. Copy the smallest version that works

Take the markup and the styles. Strip anything you don't need: demo wrappers, extra animations, decorative layers. Less code means fewer surprises.

3. Convert it to your conventions

If your project uses design tokens or CSS variables, replace hard-coded values:

/* Before: hard-coded */
.button { background: #4f46e5; border-radius: 8px; }

/* After: token-based */
.button { background: var(--color-primary); border-radius: var(--radius-md); }

This one step is what keeps a copied element from looking like a foreign object in your UI.

4. Check accessibility before you ship

Community elements vary widely here. Verify at minimum:

  • Keyboard focus is visible and the element is reachable by Tab.
  • Color contrast meets WCAG AA (4.5:1 for normal text).
  • Interactive elements use semantic HTML (<button>, not a clickable <div>).
  • Form inputs have associated labels.
  • Motion respects prefers-reduced-motion.

5. Test in context

Paste it into a real page with real content. Long labels, small screens, and dark mode break more copied elements than anything else.

6. Note where it came from

Keep a short comment or an internal credits file: source, license, date. Future you—and your legal reviewer—will be grateful.

Where element libraries genuinely shine

  • Prototypes and demos: you need something clickable today, not a design system.
  • Landing pages and marketing sites: a handful of distinctive elements, each custom.
  • Filling gaps: your framework lacks one specific component, and you don't want to build it from scratch.
  • Learning: reading well-made CSS is one of the fastest ways to improve.
  • Small projects: a personal site doesn't need a theming architecture.

Where they fall short

  • Consistency at scale: ten elements from ten contributors rarely look like one product.
  • Maintenance: you own every copy. When your design changes, you edit each one.
  • Accessibility debt: you inherit whatever the contributor did or didn't do.
  • No upstream fixes: a bug fixed in the original won't reach your copy.
  • Integration friction: different naming conventions, different units, different assumptions about resets.

When to choose which

Choose an element library when the scope is small, the timeline is short, or you need a few distinctive pieces rather than a whole system.

Choose a framework or design system when multiple people build multiple screens over months, when consistency is a product requirement, or when accessibility and theming need to be guaranteed rather than checked.

A hybrid works well for many teams: adopt a framework for the structural components—forms, navigation, layout—and borrow individual elements for the places where you want personality. Just route every borrowed element through the same token and accessibility checks, so it lands as part of your system rather than beside it.

The short version: open-source UI element libraries are a fast, flexible way to get good-looking interface pieces into a project. They are not a substitute for a design system, and the license and accessibility details are the part worth reading carefully.

Website Overview

An established domain and managed infrastructure suggest continuity of operations and may support dependable delivery, although neither guarantees service quality. An active inbound-mail setup with incomplete authentication may leave the domain more open to impersonation. Provider hosting alone does not close that gap.

Domain and Registration

Registered in 2004, this domain has about 22 years of history. That suggests continuity, although ownership and purpose may have changed. Transfer-protection status is present, helping reduce the risk of unauthorized domain transfers. The domain uses the common .com extension, which is not an independent safety signal.

DNS and Email

The observed email authentication setup is incomplete: DMARC is missing. Nameservers are provided by kapper.net, indicating managed DNS hosting. MX records point to the proxmox.com email service. No CNAME was found; the observed records resolve directly to addresses. TXT records include verification markers for Google. Such markers may also remain after a service stops being used.

TLS and Certificates

The public key uses EC with 256 bits. The server supplied a complete certificate chain. No organization name is present in the certificate; the available fields are consistent with domain validation. The certificate was issued by Let's Encrypt, commonly associated with automated certificate services. The certificate's total validity is about 89 days, consistent with a short renewal cycle.

HTTP and Browser Security

The response lacks these common security headers: Permissions-Policy. No X-Powered-By header was found, reducing one common source of backend fingerprinting information. No obvious internal addresses or debug information were found in the headers. No explicit CDN or WAF marker was found in the response headers. No CORS permission header was found, so browsers normally restrict cross-origin script access.

Technology Stack Analysis

The public page identifies Joomla! - Open Source Content Management, Joomla without precise versions, leaving fewer clues for version-specific scanning.

Search and Social Sharing

The Generator tag identifies Joomla! - Open Source Content Management, making the publishing system easier to fingerprint. No homepage canonical URL was detected. If duplicate URLs exist, consolidation may be less explicit. Twitter Card metadata is configured. JSON-LD includes Organization data, helping describe the organization as an entity. The page declares 3 language or regional alternatives using hreflang.

Hosting and Email

DNSkapper.net
HostingIPAX GmbH
Emailproxmox.com
Location Austria flagVienna, State of Vienna, Austria 45.144.208.39

User reviews (0)

  • No reviews yet.

Pages, Search and Sharing

Meta descriptionProxmox develops powerful and efficient open-source server solutions like the Proxmox VE platform, Proxmox Backup Server, and Proxmox Mail Gateway.
Canonical URLNot detected
LanguageEnglish (default) · Multilingual
Twitter Cardsummary_large_image

Social Sharing Preview

10 fields

robots.txt (opens in a new tab)

15 rules
All bots 0 allowed · 15 disallowed
  • Disallow/administrator/
  • Disallow/cache/
  • Disallow/cli/
  • Disallow/components/
  • Disallow/images/
  • Disallow/includes/
  • Disallow/installation/
  • Disallow/language/
  • Disallow/libraries/
  • Disallow/logs/
  • Disallow/media/
  • Disallow/modules/
  • Disallow/plugins/
  • Disallow/templates/
  • Disallow/tmp/

Sitemaps

2

Registration details RDAP / WHOIS

RegistrareNom, LLC
Registered2004-03-08
Expires2027-03-08
Domain statusclient transfer prohibited
Nameserversns1.kapper.net、ns2.kapper.net、ns3.kapper.net、ns4.kapper.net、ns5.kapper.net、ns6.kapper.net、ns7.kapper.net、ns8.kapper.net
DNSSECunsigned

DNS records

TypeNameValueTTLPriority
Aproxmox.com45.144.208.39900—
AAAAproxmox.com2a0f:8001:1:32::39900—
MXproxmox.commail.proxmox.com90010
NSproxmox.comns1.kapper.net86400—
NSproxmox.comns2.kapper.net86400—
NSproxmox.comns3.kapper.net86400—
NSproxmox.comns4.kapper.net86400—
NSproxmox.comns5.kapper.net86400—
NSproxmox.comns6.kapper.net86400—
NSproxmox.comns7.kapper.net86400—
NSproxmox.comns8.kapper.net86400—
TXTproxmox.comgoogle-site-verification=RplCC4SRTfBgMPUzg1h1_oGD_zd1_tL0T7ZwjeLUIBk900—
TXTproxmox.comlinkedin-site-verification=e67431e2-0049-4a87-9f51-0aebf7d7cf33900—
TXTproxmox.comv=spf1 a mx ptr ip4:79.133.36.241/28 ip4:212.224.123.65/29 ip4:212.186.127.178/28 ip4:51.91.38.32/27 ip4:66.70.154.80/29 ip4:94.136.29.234/30 ip4:94.136.29.96/27 ip4:45.144.208.32/27 ip6:2a01:7e0:0:424::/64 ip6:2a02:ab8:308::/48 ip6:2a0f:8001:1:32::/64 ~all900—

TLS and certificates

AssessmentNormal configuration
Supported protocolsTLSv1.2、TLSv1.3
Negotiated protocolTLSv1.3
Certificate subjectproxmox.com
IssuerLet's Encrypt
Valid until2026-11-25T23:18 · Remaining when checked: 62 days
Verification detailsCertificate trust: Passed · Hostname match: Passed

HTTP response headers

HeaderValue
content-typetext/html; charset=utf-8
cache-controlno-store, no-cache, must-revalidate, post-check=0, pre-check=0
strict-transport-securitymax-age=31536000, max-age=63072000
content-security-policyframe-ancestors 'self', frame-ancestors 'self'
x-frame-optionsSAMEORIGIN, SAMEORIGIN
x-content-type-optionsnosniff
referrer-policystrict-origin-when-cross-origin

Identified technologies

Joomla! - Open Source Content ManagementJoomla