Proxmox vs VMware: Full Comparison 2025
Broadcom's acquisition of VMware has disrupted the virtualization market. Massive price increases have pushed many businesses to seek alternatives. Proxmox VE has emerged as the most credible challenger. Here is our detailed analysis.
The Context: The Broadcom Shock
Since Broadcom's acquisition of VMware in late 2023, the virtualization landscape has radically changed. The new commercial policies have led to:
- • Price increases of 200% to 500% depending on configurations
- • Elimination of perpetual licenses in favor of mandatory subscriptions
- • Forced bundles packaging often unnecessary products
- • Partner program cancellation for small resellers
Facing this situation, IT directors are actively seeking viable alternatives. Proxmox VE, a mature and proven open-source platform, meets this need.
Feature Comparison Table
| Feature | Proxmox VE | VMware vSphere |
|---|---|---|
| License | Open-source (AGPL v3) | Proprietary (subscription) |
| License Cost | Free (optional paid support) | ~$1,500-5,000/CPU/year |
| High Availability (HA) | Included | Included (Enterprise+ edition) |
| Live Migration | Included | vMotion (separate license) |
| Distributed Storage | Built-in Ceph | vSAN (separate license ~$800/CPU) |
| Built-in Backup | PBS free | No (Veeam ~$500/socket) |
| SDN (Software Defined Network) | Included | NSX (separate license ~$2,000/CPU) |
| Containers | Native LXC | No (Tanzu paid) |
| Web Interface | Full-featured | vSphere Client |
| REST API | Full-featured | Full-featured |
Cost Analysis: The Proxmox Advantage
Let's take a real-world example: a 3-server cluster with 2 CPUs each (6 CPUs total).
Proxmox VE
- • License: $0
- • Community Support (optional): ~$500/year
- • Ceph included: $0
- • PBS included: $0
- Annual total: ~$500
VMware vSphere
- • vSphere license: ~$15,000/year
- • vSAN: ~$4,800/year
- • Veeam Backup: ~$3,000/year
- • NSX (if SDN required): ~$12,000/year
- Annual total: ~$22,800 - $34,800
Potential savings: 95% to 98% on annual license costs.
For a detailed TCO analysis of VMware vs Proxmox with real-world figures over 5 years, see our dedicated article. You can also read our case study: migrating 100 VMs (fr) for a concrete example.
Performance: A Tie
Both solutions use KVM/QEMU as the underlying hypervisor (indirectly for VMware via a proprietary layer). Benchmarks show nearly identical performance:
- • CPU: Native performance, negligible overhead (<2%)
- • Memory: Efficient dynamic allocation on both sides
- • Disk I/O: Equivalent performance with virtio/pvscsi
- • Network: Identical throughput with virtio-net
Use Cases: Who Should Choose What?
Choose Proxmox if:
- • You want to drastically reduce your license costs
- • You have Linux expertise in-house
- • You want to avoid vendor lock-in
- • You need LXC containers alongside VMs
- • You are looking for a European sovereign solution
Stay with VMware if:
- • You have an Enterprise contract negotiated before the Broadcom acquisition
- • Your team is exclusively trained on VMware
- • You have third-party integrations only compatible with VMware
- • Cost is not a decisive factor
Our Recommendation
In 2025, Proxmox VE offers the best value for money for the majority of virtualization environments. Enterprise features are all present, the community is active, and the ecosystem is mature.
On the backup side, the Proxmox Backup Server ecosystem continues to grow with managed offerings. To choose the right solution, check out our managed PBS offerings comparison (fr) , or discover how Cyllene, Proxmox Training Partner, compares to NimbusBackup (fr) in this market.
For businesses wanting to benefit from Proxmox without managing the infrastructure in-house, the Managed Proxmox option lets you enjoy the cost advantages while maintaining 24/7 professional support.
Official Documentation
To explore the Proxmox features mentioned in this comparison: