# Proxmox VE, Ubuntu vs OpenNebula Comparison

| | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **Star Rating** | 4.6 out of 5 | 4.5 out of 5 | 4.4 out of 5 | 
| **Total Reviews** | 36 | 2,389 | 10 | 
| **Largest Market Segment** | Small-Business (62.9% of reviews) | Small-Business (47.3% of reviews) | Mid-Market (70.0% of reviews) | 
| **Entry Level Price** | € 4,99 month (per CPU) | No pricing available | No pricing available | 

---
## Top Pros & Cons

### Proxmox VE

Pros:
- Scalability (2 reviews)
- Cost-Effective (1 reviews)

Cons:
- Steep Learning Curve (2 reviews)
- Network Issues (1 reviews)

### Ubuntu

Pros:
- Ease of Use (334 reviews)
- Linux/Ubuntu OS (298 reviews)

Cons:
- Compatibility Issues (140 reviews)
- Limited Software (102 reviews)

### OpenNebula

**Not enough data**

---
## Ratings Comparison
| Rating | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
  | **Meets Requirements** | 8.9 (32 reviews) | 9.0 (1881 reviews) | 8.3 (7 reviews) | 
  | **Ease of Use** | 8.7 (32 reviews) | 8.7 (1898 reviews) | 9.0 (7 reviews) | 
  | **Ease of Setup** | 8.1 (27 reviews) | 9.0 (911 reviews) | Not enough data | 
  | **Ease of Admin** | 8.6 (25 reviews) | 8.7 (649 reviews) | Not enough data | 
  | **Quality of Support** | 7.0 (22 reviews) | 8.3 (1725 reviews) | 6.9 (6 reviews) | 
  | **Has the product been a good partner in doing business?** | 8.6 (18 reviews) | 8.7 (568 reviews) | Not enough data | 
  | **Product Direction (% positive)** | 10.0 (30 reviews) | 9.1 (1779 reviews) | 10.0 (7 reviews) | 

---
## Pricing

### Proxmox VE

#### Entry-Level Pricing

Plan: COMMUNITY

Price: € 4,99 month (per CPU)

Key Features:
- Access to Enterprise repository
- Support via community forum

[Browse all 4 editions](https://www.g2.com/products/proxmox-ve/pricing)

#### Free Trial

No

### Ubuntu

#### Entry-Level Pricing

No pricing available

#### Free Trial

Yes

### OpenNebula

#### Entry-Level Pricing

No pricing available

#### Free Trial

Yes

---
## Features Comparison By Category

### Cloud Management Platforms

| Product | Score | Reviews |
|---|---|---|
| **Proxmox VE** | N/A | N/A |
| **Ubuntu** | 8.6/10 | 45 |
| **OpenNebula** | N/A | N/A |

#### Functionality

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **Cloud Consolidation** | Not enough data | 8.9 (38 reviews) | Not enough data | 
| **Cloud Orchestration** | Not enough data | 8.8 (40 reviews) | Not enough data | 
| **Cloud Optimization** | Not enough data | 8.7 (39 reviews) | Not enough data | 

#### Management

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **Cloud Cost Analytics** | Not enough data | 8.8 (39 reviews) | Not enough data | 
| **Cloud Security** | Not enough data | 8.9 (38 reviews) | Not enough data | 
| **Cloud Resource Management** | Not enough data | 8.7 (36 reviews) | Not enough data | 
| **Cloud Backup and Recovery** | Not enough data | 8.7 (39 reviews) | Not enough data | 

#### Agentic AI - Cloud Management Platforms

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | 8.1 (24 reviews) | Not enough data | 
| **Cross-system Integration** | Not enough data | 8.2 (24 reviews) | Not enough data | 
| **Decision Making** | Not enough data | 8.3 (24 reviews) | Not enough data | 

### Infrastructure as a Service (IaaS)

| Product | Score | Reviews |
|---|---|---|
| **Proxmox VE** | N/A | N/A |
| **Ubuntu** | N/A | N/A |
| **OpenNebula** | N/A | N/A |

#### Infrastructure Provision

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **Public Cloud** | Not enough data | Not enough data | Not enough data | 
| **Private Cloud** | Not enough data | Not enough data | Not enough data | 
| **Hybrid Cloud** | Not enough data | Not enough data | Not enough data | 
| **Bare Metal** | Not enough data | Not enough data | Not enough data | 
| **High-Performance Computing (HPC)** | Not enough data | Not enough data | Not enough data | 
| **Virtual Machines (VMs)** | Not enough data | Not enough data | Not enough data | 
| **Edge Computing** | Not enough data | Not enough data | Not enough data | 
| **Virtual Networks** | Not enough data | Not enough data | Not enough data | 

#### Management

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **Pay by Usage** | Not enough data | Not enough data | Not enough data | 
| **Usage Tracking** | Not enough data | Not enough data | Not enough data | 
| **Performance Tracking** | Not enough data | Not enough data | Not enough data | 

#### Functionality

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **Resource Auto-Scaling** | Not enough data | Not enough data | Not enough data | 

### Server Virtualization

| Product | Score | Reviews |
|---|---|---|
| **Proxmox VE** | 9.0/10 | 13 |
| **Ubuntu** | 8.8/10 | 93 |
| **OpenNebula** | N/A | N/A |

#### Performance

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **Scalability** | 9.2 (13 reviews) | 9.4 (75 reviews) | Not enough data | 
| **Portability** | 8.5 (12 reviews) | 9.4 (71 reviews) | Not enough data | 
| **Data Recovery** | 8.8 (10 reviews) | 8.7 (70 reviews) | Not enough data | 

#### Functionality

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **OS Integration** | 9.4 (12 reviews) | 9.3 (71 reviews) | Not enough data | 
| **Resource Saving** | 9.2 (12 reviews) | 9.1 (73 reviews) | Not enough data | 
| **Performance Management** | 9.3 (12 reviews) | 9.2 (69 reviews) | Not enough data | 
| **Security** | 8.3 (11 reviews) | 9.5 (71 reviews) | Not enough data | 

#### Agentic AI - Server Virtualization

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | 8.1 (42 reviews) | Not enough data | 
| **Multi-step Planning** | Not enough data | 8.4 (42 reviews) | Not enough data | 
| **Cross-system Integration** | Not enough data | 8.5 (43 reviews) | Not enough data | 
| **Adaptive Learning** | Not enough data | 8.3 (42 reviews) | Not enough data | 
| **Proactive Assistance** | Not enough data | 8.3 (41 reviews) | Not enough data | 
| **Decision Making** | Not enough data | 8.5 (42 reviews) | Not enough data | 

### Container Engine

| Product | Score | Reviews |
|---|---|---|
| **Proxmox VE** | N/A | N/A |
| **Ubuntu** | 9.0/10 | 59 |
| **OpenNebula** | N/A | N/A |

#### Application Support

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **Deployment** | Not enough data | 9.2 (48 reviews) | Not enough data | 
| **Interface support** | Not enough data | 8.8 (40 reviews) | Not enough data | 
| **Processor support** | Not enough data | 9.3 (36 reviews) | Not enough data | 
| **Application Support** | Not enough data | 9.1 (46 reviews) | Not enough data | 

#### System Capability

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **Self Healing High Availability** | Not enough data | 8.7 (33 reviews) | Not enough data | 
| **Orchestration** | Not enough data | 9.0 (40 reviews) | Not enough data | 
| **Scalability** | Not enough data | 9.2 (38 reviews) | Not enough data | 

#### Security

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **Automatic Security Updates** | Not enough data | 9.1 (41 reviews) | Not enough data | 
| **Security updates** | Not enough data | 9.0 (41 reviews) | Not enough data | 

### Operating System

| Product | Score | Reviews |
|---|---|---|
| **Proxmox VE** | N/A | N/A |
| **Ubuntu** | 8.8/10 | 279 |
| **OpenNebula** | N/A | N/A |

#### Memory Management - Operating System

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **RAM management** | Not enough data | 9.1 (200 reviews) | Not enough data | 

#### Device Management - Operating System

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **I/O management** | Not enough data | 8.7 (219 reviews) | Not enough data | 

#### Backup and Recovery - Operating System

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **Data backup** | Not enough data | 8.6 (173 reviews) | Not enough data | 

#### Error Detection - Operating System

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **System operations monitoring** | Not enough data | 8.8 (188 reviews) | Not enough data | 

### IoT Operating Systems

| Product | Score | Reviews |
|---|---|---|
| **Proxmox VE** | N/A | N/A |
| **Ubuntu** | 8.9/10 | 41 |
| **OpenNebula** | N/A | N/A |

#### Security

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **Access Controls** | Not enough data | 8.8 (34 reviews) | Not enough data | 
| **Network Security** | Not enough data | 9.3 (35 reviews) | Not enough data | 
| **Compliance** | Not enough data | 8.9 (32 reviews) | Not enough data | 
| **Cryptography** | Not enough data | 8.5 (31 reviews) | Not enough data | 

### Security Compliance

| Product | Score | Reviews |
|---|---|---|
| **Proxmox VE** | N/A | N/A |
| **Ubuntu** | 8.4/10 | 49 |
| **OpenNebula** | N/A | N/A |

#### Generative AI - Security Compliance

| Feature | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **Predictive Risk** | Not enough data | 8.3 (35 reviews) | Not enough data | 
| **Automated Documentation** | Not enough data | 8.4 (33 reviews) | Not enough data | 

---
## Categories

**Unique to Proxmox VE (1):** [Server Virtualization Software](https://www.g2.com/categories/server-virtualization)

**Unique to Ubuntu (6):** [Security Compliance Software](https://www.g2.com/categories/security-compliance), [Cloud Management Platforms](https://www.g2.com/categories/cloud-management-platforms), [IoT Operating Systems](https://www.g2.com/categories/iot-operating-systems), [Operating Systems](https://www.g2.com/categories/operating-system), [Server Virtualization Software](https://www.g2.com/categories/server-virtualization), [Container Engine Software](https://www.g2.com/categories/container-engine)

**Unique to OpenNebula (1):** [Infrastructure as a Service (IaaS) Software](https://www.g2.com/categories/infrastructure-as-a-service-iaas)


---
## Reviewer Demographics

### By Company Size

| Segment | Proxmox VE | Ubuntu | OpenNebula | 
|---|---|---|---|
| **Small-Business** | 62.9% | 47.3% | 10.0% | 
| **Mid-Market** | 28.6% | 33.1% | 70.0% | 
| **Enterprise** | 8.6% | 19.6% | 20.0% | 

### By Industry

#### Proxmox VE

- **Information Technology and Services:** 41.2%
- **Computer Software:** 11.8%
- **Computer & Network Security:** 11.8%
- **Oil & Energy:** 5.9%
- **Internet:** 5.9%
- **Consumer Goods:** 5.9%
- **Mechanical or Industrial Engineering:** 2.9%
- **International Affairs:** 2.9%
- **Higher Education:** 2.9%
- **Financial Services:** 2.9%
- **Other:** 5.9%

#### Ubuntu

- **Information Technology and Services:** 26.3%
- **Computer Software:** 25.1%
- **Computer & Network Security:** 5.2%
- **Higher Education:** 3.5%
- **Internet:** 2.9%
- **Telecommunications:** 2.5%
- **Financial Services:** 2.1%
- **Program Development:** 1.8%
- **Education Management:** 1.8%
- **Research:** 1.5%
- **Other:** 27.3%

#### OpenNebula

- **Computer Software:** 30.0%
- **Information Technology and Services:** 20.0%
- **Telecommunications:** 10.0%
- **Religious Institutions:** 10.0%
- **Internet:** 10.0%
- **Higher Education:** 10.0%
- **Computer Networking:** 10.0%

---
## Alternatives

### Alternatives to Proxmox VE

- [VMware vSphere](https://www.g2.com/products/vmware-vsphere/reviews) — 4.5/5 stars (761 reviews)
- [Azure Virtual Machines](https://www.g2.com/products/azure-virtual-machines/reviews) — 4.4/5 stars (393 reviews)
- [Nutanix Cloud Infrastructure (NCI)](https://www.g2.com/products/nutanix-cloud-infrastructure-nci/reviews) — 4.5/5 stars (324 reviews)
- [VirtualBox](https://www.g2.com/products/virtualbox/reviews) — 4.5/5 stars (292 reviews)
- [Oracle VM](https://www.g2.com/products/oracle-vm/reviews) — 4.3/5 stars (73 reviews)
- [SUSE Linux Enterprise Server](https://www.g2.com/products/suse-linux-enterprise-server/reviews) — 4.6/5 stars (72 reviews)
- [Virtuozzo](https://www.g2.com/products/virtuozzo/reviews) — 4.4/5 stars (55 reviews)
- [XenServer](https://www.g2.com/products/xenserver/reviews) — 4.2/5 stars (49 reviews)
- [VMware ESXi](https://www.g2.com/products/vmware-esxi/reviews) — 4.7/5 stars (21 reviews)
- [antsle Private Cloud](https://www.g2.com/products/antsle-private-cloud/reviews) — 4.8/5 stars (18 reviews)

### Alternatives to Ubuntu

- [Red Hat Enterprise Linux](https://www.g2.com/products/red-hat-enterprise-linux/reviews) — 4.6/5 stars (975 reviews)
- [Windows 11](https://www.g2.com/products/windows-11/reviews) — 4.5/5 stars (4280 reviews)
- [Apple iOS](https://www.g2.com/products/apple-ios/reviews) — 4.6/5 stars (1563 reviews)
- [Android](https://www.g2.com/products/android/reviews) — 4.6/5 stars (1272 reviews)
- [Windows 7](https://www.g2.com/products/windows-7/reviews) — 4.2/5 stars (894 reviews)
- [Windows 8](https://www.g2.com/products/windows-8/reviews) — 3.7/5 stars (576 reviews)
- [macOS Sierra](https://www.g2.com/products/apple-macos-sierra/reviews) — 4.5/5 stars (483 reviews)
- [CentOS](https://www.g2.com/products/centos/reviews) — 4.4/5 stars (426 reviews)
- [Oracle Linux](https://www.g2.com/products/oracle-linux/reviews) — 4.4/5 stars (346 reviews)
- [Chrome OS](https://www.g2.com/products/chrome-os/reviews) — 4.5/5 stars (716 reviews)

### Alternatives to OpenNebula

- [OpenStack](https://www.g2.com/products/openstack/reviews) — 4.2/5 stars (53 reviews)
- [Apache CloudStack](https://www.g2.com/products/apache-cloudstack/reviews) — 4.4/5 stars (27 reviews)
- [DigitalOcean](https://www.g2.com/products/digitalocean/reviews) — 4.6/5 stars (749 reviews)
- [VMware Cloud Foundation](https://www.g2.com/products/vmware-cloud-foundation/reviews) — 4.4/5 stars (621 reviews)
- [Azure Virtual Machines](https://www.g2.com/products/azure-virtual-machines/reviews) — 4.4/5 stars (393 reviews)
- [Akamai Cloud Computing](https://www.g2.com/products/akamai-cloud-computing/reviews) — 4.6/5 stars (406 reviews)
- [Amazon EC2](https://www.g2.com/products/amazon-ec2/reviews) — 4.6/5 stars (1194 reviews)
- [Google Compute Engine](https://www.g2.com/products/google-compute-engine/reviews) — 4.5/5 stars (952 reviews)
- [Hostwinds](https://www.g2.com/products/hostwinds/reviews) — 4.9/5 stars (438 reviews)
- [Automation Anywhere Agentic Process Automation](https://www.g2.com/products/automation-anywhere-agentic-process-automation/reviews) — 4.5/5 stars (5561 reviews)

---
## Top Discussions

### Proxmox VE

- Title: [Possibility of importing virtual machines from other platforms](https://www.g2.com/discussions/12585-possibility-of-importing-virtual-machines-from-other-platforms) — 2 comments, 1 upvote
  > **Top comment:** "While the answer is yes, unfortunately at the time of writing importing ova files for example isn't a gui based thing.  An example is here:..."
- Title: [What operating system is proxmox?](https://www.g2.com/discussions/what-operating-system-is-proxmox) — 1 comment
  > **Top comment:** "Proxmox VE is a complete operating system based on Debian Linux"
- Title: [Is proxmox still free?](https://www.g2.com/discussions/is-proxmox-still-free) — 1 comment
  > **Top comment:** "Its still free and great!"

### Ubuntu

- Title: [I'm having trouble installing applications on Ubuntu. What are the best practices for a beginner?](https://www.g2.com/discussions/i-m-having-trouble-installing-applications-on-ubuntu-what-are-the-best-practices-for-a-beginner) — 7 comments, 1 upvote
  > **Top comment:** "Please let me know the error, I can help you in installing application on Ubuntu."
- Title: [Is Ubuntu really good OS comoared to other Linux distros?](https://www.g2.com/discussions/is-ubuntu-really-good-os-comoared-to-other-linux-distros) — 7 comments, 2 upvotes
  > **Top comment:** "Hi Avinash,

The packaging system of Ubuntu is inherited from Debian and is very well structured and maintained, making it relatively seldom necessary to..."
- Title: [What is Ubuntu used for?](https://www.g2.com/discussions/what-is-ubuntu-used-for) — 6 comments, 2 upvotes
  > **Top comment:** "operating system"
- Title: [What is Ubuntu Desktop used for?](https://www.g2.com/discussions/what-is-ubuntu-desktop-used-for) — 6 comments, 2 upvotes
  > **Top comment:** "Thanks you
"
- Title: [What is special about Ubuntu?](https://www.g2.com/discussions/what-is-special-about-ubuntu) — 5 comments, 5 upvotes
  > **Top comment:** "is one of the stable linux."

### OpenNebula

No discussions available for this product.

---
**Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/proxmox-ve-vs-ubuntu-vs-opennebula)