Fly.io vs Proxmox Virtual Environment

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Fly.io compared with Proxmox Virtual Environment
Detail	Fly.io	Proxmox Virtual Environment
What it does	Computers for agents	Open-source server virtualization management platform
Stage	Established	Established
Founded	Not given	2004
Based in	Not given	AT
Pricing model	Freemium	Open source
Pricing	Free tier available. Machines billed by the second based on CPU and RAM preset; Sprites metered by CPU-hour and GB-hour for active use; Managed Postgres plans from $38/month. Support tiers from free community to $199/month Premium or Enterprise from $2,500/month. HIPAA compliance available at $99/mo	Not given
Key features	Machines Sprites Private Networking Zero Downtime Deploys Sprites Connectors Granular Routing Monitoring Sprite Block Device	KVM full virtualization for Windows and Linux Linux Containers (LXC) Software-defined networking Web-based user interface for VM and container management High availability clustering Integrated disaster recovery tools Backup and restore strategies Integrated firewall Live migration between nodes
What makes it different	Agents get their own Linux computer that checkpoints state automatically Machines boot in under a second and run close to users globally Same primitives scale from side project to production without rewriting infrastructure	Combines KVM and LXC on single platform for maximum flexibility 100% software-based with enterprise-class features Integrated compute, network, and storage in single solution Minimal expense for virtualization with dynamic scaling Completely open-source and free
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	84 +1 (up) since last check	85 no change since last check
Trust Flow (Majestic)	39	70
Citation Flow (Majestic)	57	55
Referring domains (Majestic)	10844	14026

5 details filled in for both companies.

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