OpenNAS

B
B tier on NAS SoftwareScore 7.0 · #7 of 21
Android app
Not listed
Free plan
Yes
Runs on
Linux, self-hosted, Web
opennas.eu
The OpenNAS homepage

Summary

OpenNAS is a free NAS operating system for managing files, storage, containers, and virtual machines through a browser-based desktop on your own hardware. File Station handles uploads and downloads, previews for images, video, audio, and several document types, ZIP operations, recycle-bin recovery, and expiring password-protected public links. Storage tools show S.M.A.R.T. health, RAID status, and per-volume usage, and let administrators initialize disks and configure space for virtual machines and containers. Container Manager works with Docker containers, images, logs, resource statistics, and docker-compose stacks. KVM/QEMU virtual machines support ISO booting, qcow2 disks, and an in-browser noVNC console. Package Center includes one-click self-hosted services such as Jellyfin, Nextcloud, Pi-hole, and Home Assistant. OpenNAS also supports SMB/CIFS, NFS, and AFP sharing, along with Time Machine targets. It is based on Alpine Linux, licensed GPL-3.0-or-later, and targets x86_64. The current installer is version 0.9.0-beta.1; it supports UEFI and BIOS boot. The Free plan is 0.00 USD per free.

Who it is for

OpenNAS suits self-hosters who want to manage shared storage, containers, and virtual machines on their own compatible x86_64 hardware. It requires a compatible 64-bit system, at least 2 GB RAM, and an 8 GB or larger USB stick for installation.

What is good

  • Browser-based management for files, storage, and virtual machines
  • Supports Docker containers and docker-compose stacks
  • Includes one-click self-hosted services
  • Offers SMB/CIFS, NFS, and AFP sharing

What to know first

  • Current x86_64 installer is a beta release
  • Installer requires compatible 64-bit x86_64 hardware
  • Arm64 images are planned, not listed as available

Verdict

OpenNAS brings storage management, file sharing, containers, and KVM/QEMU virtual machines into one browser-based system. It is worth considering if you have compatible x86_64 hardware and are comfortable using a beta installer.

OpenNAS plans and pricing

All plans
Free Free Free and open source · x86_64 beta installer · self-hosted on own hardware opennas.eu · 2 Oct 2026

Compared on NAS software

Free plan
Yesopennas.eu
Storage pools
Yesopennas.eu
User management
Yesopennas.eu
Snapshots
Yesopennas.eu
App catalog
Yesopennas.eu
Container support
Yesopennas.eu
Virtual machines
Yesopennas.eu

Facts

Purpose
OpenNAS is a free NAS operating system with a browser-based web desktop for files, storage, containers and virtual machines.opennas.eu · 2 Oct 2026
License
OpenNAS is based on Alpine Linux, targets x86_64, and is licensed GPL-3.0-or-later.opennas.eu · 2 Oct 2026
File management
File Station supports uploads, downloads, previews for images, video, audio, PDF, DOCX, CSV and code, ZIP operations, recycle-bin restoration, and expiring password-protected public links.opennas.eu · 2 Oct 2026
Storage
Storage features include S.M.A.R.T. health monitoring, RAID status, per-volume usage bars, disk initialization and configurable storage for VMs and containers.opennas.eu · 2 Oct 2026
Containers
Container Manager manages Docker containers and images, streams CPU and memory statistics and logs, and imports docker-compose stacks.opennas.eu · 2 Oct 2026
Included apps
Package Center offers one-click self-hosted services including Jellyfin, Nextcloud, Pi-hole, Vaultwarden, Gitea, Home Assistant, Portainer and Immich.opennas.eu · 2 Oct 2026
App development
The SDK supports sandboxed iframe apps with postMessage capabilities, per-app storage, notifications, files and identity, plus Ed25519 signing and publisher verification.opennas.eu · 2 Oct 2026
Network protocols
File sharing supports SMB/CIFS, NFS and AFP, with Time Machine targets, per-share recycle bins, Avahi discovery and WS-Discovery.opennas.eu · 2 Oct 2026
Authentication
Security features include WebAuthn passkeys, OIDC single sign-on, admin and user roles, signed packages, trusted publishers, an unprivileged backend, decoy routes and automatic IP blocking.opennas.eu · 2 Oct 2026
System administration
The web desktop provides SSH and authorized-key management, SMTP test sending, log viewing, TLS certificate management, an opennas CLI, resource monitoring and power controls.opennas.eu · 2 Oct 2026
Hardware requirements
The installer requires a compatible 64-bit x86_64 desktop, mini PC or server, at least 2 GB RAM, a system disk plus optional data disks, and an 8 GB or larger USB stick.opennas.eu · 2 Oct 2026
Installation limit
The current download is version 0.9.0-beta.1 for x86_64, and both UEFI and BIOS boot are supported.opennas.eu · 2 Oct 2026
Roadmap
Arm64 images, LDAP integration, an app store and publishing, PCIe/GPU passthrough, more translations and other additions are planned or under consideration.opennas.eu · 2 Oct 2026
Audience and support
The project describes itself as made for self-hosters, provides GitHub documentation and contribution links, and lists [email protected].github.com · 2 Oct 2026

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