The four platforms most VPS hosts choose between, compared on what they virtualise, how they are licensed, which billing systems they plug into and what 5, 20 and 50 nodes cost a year at published prices.
Mario Marin9 min readSolusVM 2, Virtualizor and VirtFusion are commercial VPS control panels licensed per node, from $9 to $18 a month per node for unlimited VPS at published prices. Proxmox VE is a free, open source virtualisation platform with optional support subscriptions per CPU socket. Choose VirtFusion for a KVM-only panel with modern storage options, Virtualizor for the widest hypervisor support at the lowest licence price, SolusVM 2 if you want KVM and OpenVZ from one vendor, and Proxmox VE if you want clustering, HA and Ceph and are prepared to put a billing layer in front of it.
How this was sourced. FluxBilling publishes this page and sells billing software for hosting providers with plugins for all four platforms and its own KVM module, so it partly competes with them. Every price and feature below was read from each vendor’s own pricing and feature pages on 20 October 2026, in the currency it publishes; no exchange rate is applied. The cost examples use our assumptions, stated next to them.
| SolusVM 2 | Virtualizor | VirtFusion | Proxmox VE | |
|---|---|---|---|---|
| Vendor | WebPros | Softaculous | VirtFusion Ltd | Proxmox Server Solutions |
| What it virtualises | KVM, OpenVZ, Virtuozzo | KVM, LXC, OpenVZ 7, Xen, Proxmox | KVM | KVM and LXC containers |
| Licence unit | Management node plus a licence per compute resource | Per node | Per hypervisor | Free software; optional subscription per CPU socket |
| Unlimited-VPS price | $102 per compute resource per year | $9/month or $95/year (Premium); $18/month or $195/year (Professional) | $18/month per hypervisor | €0; subscriptions €120–€1,100 per socket per year |
| Smaller licences | Up to 5 VPS $51/year; up to 2 VPS $25.50/year | $1–$8/month by VPS count (Premium) | Up to 35 servers $15/month; 5 servers $10; 1 server $1.50 | |
| Built-in billing | No; modules for WHMCS, HostBill and Blesta | In-panel hourly billing, plans and invoices; WHMCS and Blesta modules | No; first-party modules for WHMCS, Blesta, HostBill and Clientexec | No |
| Backups | Incremental backups with ThinLVM storage | Optional Backuply incremental backups | Incremental backups; Proxmox Backup Server as a target | Built-in backup jobs; Proxmox Backup Server as a separate product |
| Shared storage | None stated on the features page | None stated on the pricing page | Ceph RBD, remote filesystems, StorPool, Lightbits (HA option $1 per TB per month) | Ceph and other software-defined storage built in |
| Trial | Free trial | 15 days | 30-day evaluation | Free to run without a subscription |
All three commercial panels charge per physical node, not per VPS, once you buy the unlimited licence. The differences are in the details:
Assumptions: unlimited-VPS licences, every node runs customer VMs, yearly prices where published, otherwise twelve months; SolusVM 2 adds one separate management node; Proxmox nodes have two CPU sockets. No taxes, add-ons or discounts.
| Platform | 5 nodes | 20 nodes | 50 nodes |
|---|---|---|---|
| SolusVM 2 | $531.25 | $2,061.25 | $5,121.25 |
| Virtualizor Premium | $475 | $1,900 | $4,750 |
| Virtualizor Professional | $975 | $3,900 | $9,750 |
| VirtFusion, unlimited, monthly | $1,080 | $4,320 | $10,800 |
| Proxmox VE, no subscription | €0 | €0 | €0 |
| Proxmox VE, Community subscription | €1,200 | €4,800 | €12,000 |
| Proxmox VE, Basic subscription | €3,700 | €14,800 | €37,000 |
VirtFusion’s yearly term would take about 15% off its figures. None of these numbers includes a billing system, which three of the four need in front of them.
Broader billing platform choices for VPS businesses are in our guide to billing software for VPS and cloud hosting providers.
Changing panel is painful because customers notice: new IP addresses, a new console, a new password. Before you commit, check three things. Can the panel import VMs that already run on your nodes, or only build new ones? Will the billing module keep your existing services, or create new ones? And can IP addresses move with the VMs? SolusVM 2 lists importing existing VPS from vzdump backups or customer ISOs; the rest is usually a migration project.
FluxBilling is billing software for hosting providers. It connects to all four platforms with plugins that are included on every plan with no node charge:
| Plugin | What it automates | Not supported |
|---|---|---|
| SolusVM 2 | Create, suspend, unsuspend, terminate, reinstall, power, console, password reset, usage stats | Resize, snapshots and backups; SolusVM 1 |
| Virtualizor | Create, suspend, unsuspend, terminate, rebuild, power, console, password reset, usage stats; optional Windows setup | Advertised resize; snapshots and backups |
| VirtFusion | Create, suspend, unsuspend, terminate with optional delay, rebuild, power, package change, one-click login to VirtFusion, password reset, usage stats | Snapshots and backups |
| Proxmox VE | KVM VMs cloned from a cloud-init template, power, console, snapshots, CPU and memory changes, disk growth | LXC containers; addresses from FluxBilling’s IPAM; documented for Proxmox VE 7 and 8, not yet 9 |
For SolusVM 2, Virtualizor and Proxmox, the console opens in FluxBilling’s own browser viewer, so the panel’s VNC password is never shown to the customer.
There is also a second route. FluxBilling’s own VPS module runs an agent on each KVM node instead of a panel, with IPv4 and IPv6 from its IPAM, live migration within a node group and hourly or monthly billing, for €6 per node per month ($7 for US accounts). Its panel migration adopts running VMs from Virtualizor, SolusVM 2 and Proxmox VE in place without restarting them, and imports Virtualizor and SolusVM 2 plans; VirtFusion is not an import source.
Where the panels win, plainly. Each has years of production use at hosting companies and its own customer-facing panel. FluxBilling’s native module has snapshots but no VM backups, measures traffic without billing or capping it, does not support Ceph, and is pre-1.0. If you need any of those today, run one of the four and let FluxBilling, or your current billing system, sit in front of it.
Plans start at €4.95 a month ($5.95 for US accounts) with a 14-day refund; see pricing or the live demo.
It depends on the hypervisor and storage you want. Virtualizor is the cheapest licence and covers the most hypervisors, VirtFusion is KVM-only with strong shared storage options, SolusVM 2 covers KVM and OpenVZ, and Proxmox VE is free with clustering, HA and Ceph but needs a billing layer.
On published prices for unlimited VPS, Virtualizor Premium at $9 a month per node is half VirtFusion’s $18 per hypervisor. VirtFusion’s 35-server licence at $15 and its yearly discount narrow the gap, and Virtualizor Professional at $18 matches it.
Not in the hosting sense. It manages VMs and containers, clusters, storage and backups, with users and permissions, but has no plans, customer sign-up or invoicing. Hosting providers connect it to a billing system or put a panel in front of it.
On annual billing, $21.25 a year for a management node and $102 a year per compute resource with unlimited VPS, or $51 and $25.50 for licences limited to 5 and 2 VPS. Its FAQ gives $10 a month for a management node that also runs VMs.
SolusVM 2, Virtualizor and VirtFusion list WHMCS modules of their own. Proxmox VE is supported through third-party modules.
SolusVM, WebPros, cPanel, Plesk, Virtualizor, Softaculous, Backuply, VirtFusion, Proxmox, Ceph, StorPool, Lightbits, OpenVZ, Virtuozzo, Xen, WHMCS, Blesta, HostBill, Clientexec, ModulesGarden and VMware are trademarks of their respective owners. FluxBilling is not affiliated with or endorsed by any of them. Third-party details are as published on the dates above and may have changed since.
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