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NAS on Debian · one-off payment

Your files, at home.

Photos, backups, cameras and apps for the whole household on a device of your own, managed from the browser. No monthly fee, and your files never pass through someone else's servers.

Buy a licence Download the installer See everything it does

One-off payment · one year of updates · 60-day trial

Try it right here

It is the real panel, whole, with the data of a sample NAS. Open the apps, go into the folders, look at the disks, switch the theme: nothing you touch exists.

LGM-OS · sample data Live demo Open full screen

Loading the panel…

The console and the cameras' live video are the only things that do not work here: they need a NAS and a camera. Everything else is the product as it is.

0 €monthly fee
1058apps you can install
356versions released
7languages

What is underneath

Four layers, none of them hidden.

  1. The panelThe whole NAS from the browser, and from your phone as an app.
  2. Docker and virtual machines1058 apps prepared and tested by us, and Windows or Linux on KVM.
  3. StorageBtrfs or ZFS, with snapshots and integrity checks.
  4. The base: DebianA normal Debian underneath, stable and with its updates.

What it does, area by area

One edition for home and one for businesses, with all of this as the base in both. What you have already bought is never cut back.

Storage

The disks form a volume with the redundancy you choose. Before creating it, the wizard shows the usable space each option leaves.

  • Btrfs and ZFS
  • Snapshots
  • SMART and scrub
See the 7 details
  • Btrfs by default, or ZFS: RAID 0, 1 and 10 with Btrfs; mirror and parity (RAID 5/6) with ZFS
  • Scheduled snapshots, kept by hours, days, weeks and months
  • SMART and scrub with real progress and a notice when they finish
  • Swap a disk while it runs, without shutting the machine down
  • Instant detection when you plug in a new one
  • Space report: which folders take the room, per-user quota and duplicates
  • Secure erase before retiring a disk, using the disk's own erase when it supports it

Files

A file explorer in the browser: drag, rename and compress. The same folders open in Windows, macOS and on the phone, with the same permissions.

  • SMB, NFS and WebDAV
  • Recycle bin
  • Share links
See the 9 details
  • SMB, NFS and WebDAV on the same folder, without setting it up three times
  • The NAS shows up on its own in Windows Network and in the Finder
  • A recycle bin per folder, which you can turn off on the ones you do not want it
  • Share links with an expiry date and a password
  • Zip and unzip without downloading anything
  • Search by name and inside the contents of the files
  • Permissions per user and per group, folder by folder
  • Notepad: change a .txt or a .conf right there, without downloading it
  • Previous Versions in Windows File Explorer, taken from the snapshots

Gallery

The photos and videos in your folders, sorted by month, with a map and search by phrase. It also opens on the phone.

  • Timeline
  • Map
  • HEIC and RAW
See the 10 details
  • A timeline by month, built on its own in the background
  • Map of where each photo was taken, with streets if you turn them on
  • Search by phrase (“dog on the beach”) with the local AI, without leaving the NAS
  • Videos too, streamed in pieces: a 3 GB one is not downloaded whole
  • iPhone HEIC, RAW and ProRAW from your camera: shown without converting anything
  • Live Photos: one photo that moves, not a photo and a video twice over
  • Real albums, without moving a single file on the disk
  • Favourites, rotate, zoom, full screen and download from the viewer itself
  • Duplicates: it groups what is repeated and never lets you delete the last copy
  • Upload from the app, and whatever you delete goes to the NAS recycle bin

Your clouds, as just another folder

Connect your Drive, your Nextcloud, Dropbox or an S3 bucket and they show up in the explorer as a NAS folder. Copying from the cloud to the disk is a drag and drop. And they show up from Windows too, because to the system they are an ordinary folder.

  • Browse them from Files
  • Source for a backup
See the 4 details
  • Google Drive, OneDrive, Dropbox, Nextcloud, S3, Backblaze B2 and more
  • Your personal cloud, separate from where your backups live
  • You browse them from Files, over the network and from the search box
  • They can be used as the source of a backup

Package centre

1058 third-party apps prepared and tested for LGM-OS, such as Jellyfin, Nextcloud, Home Assistant, Vaultwarden, Pi-hole or Immich. They install in one click, with a link on the desktop and their data on the volume.

  • Our own catalogue
  • Visual editor
  • docker-compose
See the 5 details
  • Our own catalogue, searchable and by category
  • A visual editor for ports and folders, without touching YAML
  • A docker-compose editor for the advanced bits, if you want it
  • Containers you created by hand: they also show up as an app with their own link
  • Everything lives in your volume, not on the system disk

Virtual machines

Windows, Linux or whatever you need, on KVM, with the screen inside the panel. No client to install, no ports to open and no leaving the browser.

  • Graphical console
  • Boot from ISO
  • On your phone too
See the 6 details
  • A built-in graphical console, from your phone as well
  • Boot from an ISO and have it ejected on its own when the install finishes
  • Processor, memory and disks all set from the panel
  • Their disks live in the volume, with whatever redundancy you gave it
  • Import machines from VMware, Hyper-V and VirtualBox (OVA, OVF, VMDK, VHD, VHDX and VDI)
  • Scheduled backups with a boot test: after each backup, the machine is started without network to check it

Cameras

Video surveillance with the cameras at home and without the manufacturer's cloud: the NAS records, on its own disks.

  • ONVIF and RTSP
  • Video wall
  • Motion detection
See the 7 details
  • Any ONVIF or RTSP camera, and they are found on the network on their own
  • A configurable wall and full screen
  • Continuous recording in chunks, with retention by days and by size
  • Motion detection so you jump straight to what happened
  • A thumbnail for every recording and a filter by date and time of day
  • The recordings are just another folder: reachable from Files and over the network
  • Talk through the camera on those with a speaker (ONVIF and Hikvision)

Backups

Automatic backups to another disk, to another NAS over SSH or to the cloud, with versions you can go back to.

  • Local, SSH or cloud
  • Incremental versions
  • Restore from the panel
See the 8 details
  • A local, SSH or cloud destination (any provider)
  • Incremental versions: each one restores in full and only takes up what changed
  • Tiered retention: hours, days, weeks and months
  • Air-gapped USB backup: the disk is only mounted while copying
  • Backup of the computers at home with LGM Connect, with versions
  • Real progress while it copies, and a check that what is over there matches what is here
  • Object Lock on S3 and B2: not even you can delete a backup before its time
  • Restore from the panel, the whole thing or just what you pick

Access from outside

Get into your NAS from anywhere with LGM Tunnel: an address of your own on lgm-os.com, with no ports to open. Or, if you prefer, a WireGuard VPN in three clicks, with a QR code for your phone.

  • LGM Tunnel
  • WireGuard VPN
  • Dynamic DNS
See the 6 details
  • LGM Tunnel: your NAS at yourname.lgm-os.com, with the padlock and no ports to open
  • A WireGuard VPN with clients by QR code and configurable routes
  • Dynamic DNS so you get there by name even when your IP changes
  • Let's Encrypt certificates, with DNS validation that does not need open ports
  • A reverse proxy to publish one app with its own domain
  • Local DNS and DHCP, static routes and network card bonding

Security

Security measures are on out of the box, without having to look for them in the settings.

  • Two-factor sign-in
  • Automatic blocking
  • Audit log
See the 7 details
  • Two-factor and a configurable password policy
  • Automatic blocking of whoever keeps trying, on the panel or over SSH
  • A firewall that opens the port only when you turn the service on
  • Anti-ransomware: snapshots not even the administrator can delete
  • Jailed SFTP, with no access to the rest of the system
  • An audit log of everything that gets touched, downloadable
  • Logs sent encrypted with TLS to another server

Control panel

All administration from the browser, no terminal. For those who need it, the terminal is in the panel, with re-authentication.

  • Users and groups
  • Notifications
  • UPS
See the 7 details
  • Users and groups, with per-service permissions on each
  • Join an existing Active Directory / LDAP
  • Alerts over Telegram, Discord, ntfy or email, with a delayed digest
  • UPS: an orderly shutdown when the power goes
  • Kiosk mode: the panel full screen on the machine's own monitor
  • Four themes —Obsidian Pro, Cyber-Glass, Terminal NOC and Daylight Clean— and an accent colour
  • Update cache for the computers at home: Debian and Ubuntu, Docker Hub and Windows Update

Monitor

The device's status in real time and its history, without installing anything else.

  • With history
  • Alerts
  • Who is connected
See the 4 details
  • Processor, memory, network and the temperature of every disk, with history
  • Threshold alerts before it becomes a problem
  • Who is connected, from where and since when
  • Network diagnostics from the panel: ping, traceroute, ports and iperf3

For those who already have a NAS and for those starting out

A computer of your own and a USB stick to install it.

If you already have a NAS

LGM-OS does what you expect from a NAS —folders shared over SMB and NFS, versioned backups, apps in containers, cameras, virtual machines and remote access—, on the hardware you choose and with a single payment. The data is copied over the network from the previous NAS and the folders are recreated with their permissions.

Underneath is standard Debian: the machine does not depend on a manufacturer to keep receiving updates.

If you are starting from scratch

A NAS server is a computer that stays on and keeps everything for the whole household: phone photos, documents, computer backups and camera recordings. LGM-OS turns a computer into one without any Linux knowledge: install it, open the panel in the browser and set it up from there.

  • A PC or mini PC, 64-bit x86, with at least 4 GB of memory
  • One disk for the system and one or more for the data
  • For virtual machines or several cameras, 8 GB of memory or more
  • Disks on Btrfs or ZFS, with snapshots and integrity checking

LGM Connect

The LGM-OS app for computer and phone: it opens the panel, reaches the NAS from outside through LGM Tunnel, backs up the computers at home and the phone's photos. A single app, which recognises each NAS's edition.

On narrow screens the panel changes shape: a home screen with icons, each app full screen and a bar at the bottom.

The home screen on a phone The home screen on a phone (dark)
An app full screen on a phone An app full screen on a phone (dark)

LGM TunnelGet in quickly from anywhere

Your NAS at an address of your own, like yourname.lgm-os.com: open it from your phone, work or a hotel and you are in your panel. No ports to open, no router to touch and no IP to remember.

  • It also works where ports can't be opened: CGNAT fibre, 4G or a shared flat
  • With the padlock: the connection is encrypted and the browser shows no warnings
  • You turn it on from the panel: choose the name and you're done
  • Included in the licence, no subscription
  • The LGM Connect app uses it by itself to reach your NAS when you are away

https://yourname.lgm-os.com

One-off payment versus subscription

A paid cloud

  • A monthly fee for as long as you use it
  • The provider sets the price
  • Your files, on someone else's servers
  • Stop paying and you lose access to your files
  • Space limited to the plan you pay for

LGM-OS

  • One-off payment, with one year of updates
  • After that year, the whole NAS keeps working
  • Your files, on the disks at home
  • Accessible without paying anything else
  • As much storage as the machine holds

Getting started

Three steps. No Linux knowledge, no commands to type.

  1. Write the ISO to a USB stick

    It downloads free and comes in under a gigabyte. Any 2 GB stick will do, and the program to write it is the same one you would use for Windows or Ubuntu.

  2. Boot the machine from that stick

    It asks you four things — what it will be called, the network, your user and which disk the system goes on — and does the rest by itself. Disks are listed with their model and size, so there is no way to pick the wrong one.

  3. Open the panel in your browser

    From any machine in the house, using the address it leaves written on the screen. You create your administrator and you are in: there is no factory user or password for anyone to guess.

The full steps, with screenshots →

Who develops LGM-OS

LGM-OS is an independent project, developed by a single person. 356 versions have been released so far, and most fixes come from using it daily on a real NAS.

Before buying, it is worth knowing what it does not do yet:

  • 64-bit machines only: a Raspberry Pi will not work
  • Per-person quotas need ZFS; with Btrfs the limit is per shared folder
  • The disk chosen for the system in the installer is fully formatted

If any of these limits is a deal-breaker, better to know now.

Luis García Menéndez LinkedIn

Questions and bugs are handled in the community, which the developer reads. Go to the community

Home licence
39 €
one payment · yours forever
  • Every feature of the Home edition
  • One year of updates; extra years are optional, at 10 € each
  • Checked on your own machine: once activated, it needs no internet
  • Transferable: if you change machine, it goes with you
  • LGM Tunnel: your own address to get in from outside
  • 60 days to try it before you buy
Buy now

Secure payment with Polar · taxes included · your card never passes through here

Lifetime, with unlimited updates: 200 €. Business edition: from 29 € a month. See all plans

A single payment

You buy the licence, receive the key and enter it on the NAS, in Control panel → System → Licence.

Would you rather look first? The installer is a free download and all the documentation is open, with no sign-up. And if you already have an account, sign in to the portal to see your licences.

Download Documentation Go to the portal

Support development

Contributions are voluntary and are made through Ko-fi.

Make a contribution No account is needed and it does not unlock any feature.

What contributions are used for

  • Servers and domain: the website, the downloads and the update channel
  • Test machines and disks to reproduce faults on real hardware
  • Developing the updates, which reach every NAS

What is raised goes back into the project, and if that ever changes it will be stated on this page.

Frequently asked questions

What machine do I need?

Any 64-bit PC with 4 GB of memory and a disk for the system. A second-hand mini PC is plenty; if you are going to run virtual machines or several cameras, make it 8 GB. The installer takes care of the rest.

What if the machine breaks? Do I lose the licence?

No. The licence is yours and transferable: you deactivate it on the old machine from the portal and activate it on the new one. And your data stays on the disks, which you can move to another machine running LGM-OS.

Does it need the internet to work?

To get started, yes: the trial comes from linking your lgm-os.com account from the panel, and a bought licence is activated once over the internet. After that, no: the licence is checked on your own machine, with a cryptographic signature, and the NAS keeps working offline. If within 7 days you neither link your account nor activate a licence, the NAS stays usable only to get your files out until you do.

Can I try it before paying?

Yes. The installer is a free download, and linking your lgm-os.com account from the panel starts a 60-day trial with everything open —except the LGM Tunnel address, which comes with the licence— and no card. When it ends, the NAS stays only for getting your files out until you activate a licence: nothing is deleted.

I already have a NAS. Can I migrate?

Yes. You copy the data over the network (SMB or rsync) from the old NAS and rebuild the shared folders here with their permissions. The documentation has the step-by-step guide.

What happens if the project stops?

The NAS keeps working. It is built on Debian, Btrfs or ZFS, Samba and Docker, all standard and open: the disks can be read on any Linux and the apps are ordinary containers. There are no proprietary formats.

Does it work as a file server for a small office?

Yes: users and groups with per-folder permissions, recycle bin, quotas, access log and joining an existing domain. For companies there is the Business edition, with its own domain, roles, external audit and ransomware protection.

Can I stop paying for cloud storage?

Yes: your files stay on the disks at home, with access from the phone and from outside. If you want one more copy, the NAS can keep an encrypted mirror in the cloud you already use.

What if a disk breaks?

With two or more disks in a mirror, nothing is lost: you swap the disk from the panel and the set rebuilds itself. The panel warns you through SMART before it happens.

LGM-OS, LGMOS or LGM OS?

They are the same. The name is written LGM-OS, with a hyphen, but you will also see it as LGMOS or LGM OS: they all lead here.

Community

On the LGM-OS Discord server, questions get answered, setups are shared and new versions are announced.

Join the community

Your files, on your own server.

60 days to try it. No card. No fees afterwards.

Buy a licence Download and try it

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