Deploy. Virtualize. Scale.

AtomOS:
The Hypervisor for your infrastructure

AtomOS is a next-gen Linux hypervisor built for bare-metal, GPU-enabled, and autonomous infrastructure. RHEL-compatible, lightweight, and clustering-native — no central controller required.

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KVM-Based Hypervisor

Built on proven KVM and QEMU technology with RHEL compatibility and no vendor lock-in

Enterprise Security

Secure boot, ECC memory support, and advanced GPU passthrough for production workloads

Cloud Integration

Seamless integration with public clouds and hybrid infrastructure management

The Next-gen Linux Hypervisor you were waiting for

No need to be fancy to be just right. At Elemento, we believe in the Linux paradigm. We didn't want to reinvent virtualization from scratch, forgetting all the great work behind KVM and QEMU over the past 30 years.

Instead, we built on top of KVM and QEMU to create AtomOS, a hypervisor that is open, portable, and secure.

RHEL-compatible, KVM-based virtualization platform
No vendor lock-in: upstream Linux and open standards
Secure boot, ECC memory, GPU passthrough
Zero centralized services — autonomous clustering with C4 protocol
Nested virtualization-ready (GCP, AWS, Azure)
Ideal for hybrid, on-premise, and edge computing

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GPU

Automatic passthrough

+70%

VM CPU performance

1000+

VMs per Host

10x

Faster Deployments

Quickstart Install in 3 Minutes

Get AtomOS running on your infrastructure quickly and easily

AtomOS Installation Guide

1. Install Linux OS based on what kind of node you desire:

compute-only node: AlmaLinux/Rocky Linux 9
storage-only node:Rocky Linux/AlmaLinux 9, Fedora ≥38, Ubuntu ≥24, Debian 12
complete installation (compute + storage): AlmaLinux/Rocky Linux 9

2. Install the AtomOS CLI tool Nucleus:
curl -fsSL https://repo.elemento.cloud/get-atomos.sh | sudo bash

Install the AtomOS services

Use on-prem for local installations or cloud if you are on a CSP bare metal.

3. Install for a storage-only node:
sudo nucleus --install storage <on-prem | cloud>

3. Install for a compute-only node:
sudo nucleus --install compute <on-prem | cloud>

3. Install for a complete AtomOS version:
sudo nucleus --install full <on-prem | cloud>

4. Follow Nucleus indications to conclude the configuration:

Install additiona modules (ZFS, GlusterFS)
Setup the storage
Setup the network

5. Access Web UI at localhost:9090

6. Reboot the host.

7. Install Electros to launch and manage VMs from anywhere

Advanced Hypervisor Features for Private Cloud Deployments

Enterprise-grade features designed for production workloads

Thin Provisioning

Supported via qcow2 format for efficient storage utilization and dynamic disk allocation.

Live VM Migration

Over fast LAN + shared FS for zero-downtime workload mobility.

Secure Boot + vTPM

Full support for secure boot and Virtual Trusted Platform Module for enhanced security.

Command Line Tools

Native Electros CLI for automation and scripting, plus standard Linux virtualization tools.

Load Balancing

Automatically distributes workloads across nodes without needing a central controller. Each server makes local decisions to balance traffic, ensuring high performance, resilience, and seamless scalability.

Storage Backends

Any shared FS: GlusterFS, Ceph, NFS, iSCSI, etc. - flexible storage options for your infrastructure.

You-Know-Who vs AtomOS — Hypervisor Showdown

How AtomOS compares to the industry-leading virtualization platform

Feature	Vmware VSphere	Elemento AtomOS
Hypervisor Class	Type 1	Type 1
Operating System	Proprietary Kernel	Rocky/Alma Linux (RHEL binary compatible)
Virtualization Engine	Proprietary Closed-Source	Upstream "Vanilla" KVM/QEMU
Management	vCenter Server VM	Electros (Web UI + CLI) & REST API
Licensing	Commercial, CPU-based	Server-based (not CPU cores or VM count)
Cluster Setup	Manual w/ License	Auto-discovery w/ License (C4 protocol)

Compatible Guest Operating Systems

AtomOS supports a wide range of Linux and Windows guest OSes for flexible deployment scenarios

Linux Distributions

Ubuntu 24.04+ Debian 12+ AlmaLinux Rocky Linux Fedora 38+ Pop!_OS Mint CentOS FireBoxV Arch Linux Gentoo OpenSUSE OpenBSD FreeBSD NetBSD Virtually any Linux...

Windows Support

Windows XP (EOL) Windows 7 (EOL) Windows 10 Windows 11

Server 2003 (EOL) Server 2008 (EOL) Server 2012 (EOL) Server 2016 (EOL) Server 2019 Server 2022 Server 2025

MacOS Support

Work in progress...

Filesystem & Disk Format Compatibility

For performance, use raw or qcow2 on stable Linux-native FS (EXT4, XFS). Avoid BTRFS/ReFS stacking with qcow2.

Filesystem	qcow2	raw
NTFS	Stable	Stable
ReFS	Avoid CoW-on-CoW	Not recommended
EXT4	Recommended	Full support
XFS	Recommended	Full support
BTRFS	Avoid CoW-on-CoW	Not recommended
ZFS	Avoid CoW-on-CoW	Not recommended

Self-Healing Clusters with C4 Protocol

Autonomous clustering without centralized management

AtomOS implements Elemento's C4 protocol for automatic peer discovery and trust-based node linking. No need for orchestrators, matchmaker services, or controller VMs.

Key Benefits:

Automatic node discovery and trust establishment
No centralized management or single points of failure
Self-healing cluster topology with automatic failover
Distributed control plane with peer-to-peer communication

Autonomous Clustering

Every host participates in its own discovery and control fabric without external dependencies.

Choose Your AtomOS Edition

From free community use to enterprise production deployments

AtomOS Community Edition — Free Forever

€0

Per server, regardless of CPU cores or VM count

✓ Run up to 2 virtual machines per server
✓ CLI control only (virsh, qemu-img)
✓ Perfect for labs, makers, DevOps hobbyists

Download Now

AtomOS Enterprise — For Private Cloud Production

€600/year

Per server, regardless of CPU cores or VM count

✓ Unlimited VMs and nested virt
✓ Web GUI (Cockpit + Electros)
✓ Monitoring + Alerts (Grafana stack)
✓ Cluster PXE boot + live migration
✓ Guaranteed upgrade path and support

Get Enterprise License

Server-Based Pricing Drives Green Economy

Our pricing model incentivizes efficient resource utilization and sustainable infrastructure choices

Efficient Resource Utilization

Unlike CPU-core or VM-count based licensing, AtomOS's server-based pricing encourages organizations to maximize the value of each physical server. This drives investment in larger, more efficient hardware that can host more workloads with better performance per watt.

Green Economy Benefits:

Incentivizes high-density, energy-efficient servers
Reduces power consumption through consolidation
Lower total cost of ownership and operational expenses
Extends hardware lifecycle through better utilization

Sustainable Infrastructure

By charging per server rather than per CPU core or VM, we encourage organizations to choose powerful, efficient hardware that can handle more workloads with less energy consumption.

Result: Fewer servers, less power, lower carbon footprint

Frequently Asked Questions

Common questions about AtomOS deployment and usage

What platforms support AtomOS?

Runs on x86_64 servers (Intel/AMD) with virtualization support. Also runs as nested guest in AWS/GCP/Azure metal VMs.

Can I use AtomOS for gaming or AI workloads?

Yes. GPU passthrough is supported for NVIDIA (GTX960+) and AMD cards, tested for gaming, 3D rendering, and inference engines.

Does AtomOS require a central manager?

No. Unlike vSphere or Proxmox, clustering is embedded — every host participates in its own discovery and control fabric.

Is AtomOS open-source?

Core hypervisor is open. Electros and C4 protocol orchestration layers are licensed with commercial support options.

Complete Your Cloud Infrastructure

AtomOS works seamlessly with other Elemento products to create a complete cloud platform

Electros

Universal multicloud dashboard and CLI for managing VMs across public clouds and on-prem infrastructure from a single interface.

Learn About Electros

Atomosphere

Unified API that maps every cloud provider into a single programmable interface for seamless orchestration.

Learn About Atomosphere

AtomOS: The Hypervisor for your infrastructure