OpenNAS review
A free, open-source NAS for storage, containers, virtual machines and self-hosted apps.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
OpenNAS is a free, open-source NAS operating system for self-hosters and homelabs running compatible x86_64 hardware. It combines storage management, file access, applications and virtualization in a browser-based desktop with windows, a launcher and notifications. The file manager includes previews, ZIP tools, a recycle bin and share links, while network sharing covers SMB, NFS and AFP. For administrators, the system brings together ZFS storage pools, software RAID, S.M.A.R.T. monitoring, scheduled scrubs and snapshots in one platform.
The published product details show a broad self-hosted stack rather than a basic file server. Docker container and Compose stack management sit alongside KVM/QEMU virtual machines with a browser-based noVNC console. Package Center provides one-click access to services including Jellyfin, Nextcloud, Pi-hole, Vaultwarden, Gitea, Home Assistant, Portainer and Immich. The app SDK and signed application packages also give the platform an ecosystem path beyond its built-in tools. User and group permissions, passkeys and OIDC single sign-on add identity controls for shared environments.
OpenNAS is currently distributed as beta release 0.9.0-beta.1, so it is a better fit for self-hosters comfortable evaluating a developing platform than for organizations seeking a settled NAS operating system. Its free, open-source model removes license cost and supports a wide range of workloads, but the breadth also brings more administration than a storage-only appliance. Choose it for a single system that can host files, containers, virtual machines and services. Choose an alternative if beta software or x86_64 hardware is not appropriate for your deployment.
OpenNAS pros and cons
- Where it wins
- ZFS pools, software RAID, snapshots and scheduled S.M.A.R.T. monitoring
- Docker, Compose and KVM/QEMU virtual machines with browser consoles
- Permissions, passkeys, OIDC SSO and a signed-package app center
- Where it doesn't
- Currently offered as a beta release for x86_64 hardware
- Requires compatible hardware and self-hosted administration
- Its scope may exceed the needs of users seeking basic file sharing
OpenNAS fact sheet, pricing and score →
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