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Proxmox VE vs Virtual Machine Manager: catalog facts
Proxmox VE	Virtual Machine Manager
Freemium Free to download and use under the AGPLv3. Paid subscriptions add the enterprise…	Free Free and open source under the GPL 2.0, maintained by Red Hat.
Linux, Self-hosted	Linux
One web interface for KVM virtual machines and LXC containers on the same host Backup, restore and high-availability clustering included rather than sold separately	The standard interface for KVM, so guides and answers are everywhere Command line tools for creating and editing machines without a desktop
Dedicated hardware: it is the operating system, not an app you run on your desktop Without a subscription you use the no-subscription repository and see a reminder at each login	Linux only The interface is functional and has barely changed in years
Operating system, Self-hosted	Downloadable app
Open source	Open source
License: AGPL-3.0	License: GPL-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.