Best Linux OS for a Home Server
For a home server that just runs, install Debian. It is free, boringly stable, light on RAM, and it is the base that Proxmox, OpenMediaVault, and most homelab guides already assume. Ubuntu Server is the close second if you want newer packages and the largest pile of tutorials. Pick Proxmox VE instead when the plan is virtual machines, and a NAS OS when the box is mostly storage.
Updated 2026-06-11 · by Jonathan Caruso
Top pick
Debian
Debian stable is the default home server OS for a reason. A release gets about five years of security updates, the base install idles in a few hundred MB of RAM, and nothing changes underneath you between updates. There is no license, no account, and no vendor pushing snaps or telemetry. Install it headless, enable unattended-upgrades, put Docker on top, and the machine disappears into the closet for years. Debian 13 (trixie) is the current stable release.
The options
Debian
Free, open sourceThe community-run stable distro that most homelab platforms are built on.
Visit Debian site- Runs on
- Very light. ~512 MB RAM headless; runs on a Pi or any old PC.
- Pick it if
- You want a server that stays out of the way for five years. The default pick.
Ubuntu Server
Free; optional Ubuntu Pro (free for personal use on up to 5 machines)Debian's commercial cousin with newer kernels, more drivers, and the most tutorials online.
Visit Ubuntu Server site- Runs on
- Light. ~1 GB RAM headless on an LTS release.
- Pick it if
- You're new to Linux and want every guide you Google to match your system.
Proxmox VE
Free (optional paid enterprise repo)A Debian-based hypervisor with a web UI for KVM virtual machines and LXC containers.
Visit Proxmox VE site- Runs on
- Heavier. 8 GB+ RAM to leave room for guests; more with ZFS.
- Pick it if
- Your home server is really a VM host: one box running OPNsense, Home Assistant, and a NAS guest.
AlmaLinux
Free, open sourceA free, RHEL-compatible distro that took over the role CentOS used to fill.
Visit AlmaLinux site- Runs on
- Light. ~1 GB RAM headless.
- Pick it if
- You want to practice enterprise Linux at home (RHCSA, dnf, SELinux) on a 10-year lifecycle.
OpenMediaVault
GPL, freeA Debian-based NAS OS that adds a storage-focused web UI on top of plain Debian.
Visit OpenMediaVault site- Runs on
- Very light. Runs on a Raspberry Pi or an old PC.
- Pick it if
- The server is mostly file shares and you want SMB, users, and disks managed from a browser.
How to choose
Decide what the box is for before you pick the distro. A general server that runs Docker containers (Jellyfin, Pi-hole, Home Assistant, the *arr stack) wants plain Debian or Ubuntu Server; the apps live in containers anyway, so the host should be the most boring thing available. If the real plan is several isolated systems on one machine, install Proxmox VE and make everything a VM or LXC container instead; that head-to-head is covered in Proxmox vs VMware ESXi. And if the machine is first a file server, skip the general distros and use a storage OS; see the best NAS OS roundup for that decision.
Between Debian and Ubuntu Server, the honest difference is small. Ubuntu ships newer kernels and firmware, which matters on very recent hardware, and its tutorial coverage is unmatched; the cost is snap packages and a company steering the defaults. Debian moves slower and asks nothing of you. AlmaLinux is the odd one out: pick it only if you want your home server to double as enterprise practice, since RHEL habits (dnf, firewalld, SELinux) transfer straight to work. Whatever you install, run it headless and manage services with Docker; the Docker vs Podman comparison covers the container side.
The verdict
Install Debian and stop thinking about it. It is free, stable for years, light enough for whatever hardware you have, and every homelab guide either targets it or something built on it. Pick Ubuntu Server if you want newer hardware support and the most tutorials, Proxmox VE if the machine's real job is virtual machines, AlmaLinux if you want RHEL practice at home, and OpenMediaVault if it's mostly a file server. If storage is the whole point, start from the best NAS OS roundup instead, and plan the disks with the RAID and ZFS storage calculator before you buy anything.
FAQ
Which OS is best for a home server?
Linux, and for most people Debian specifically: it's free, stable for about five years per release, and light enough for any old PC. Ubuntu Server is the better pick if you're new and want tutorials that match your system. If the box is mainly storage, use a NAS OS instead; see the [best NAS OS](/alternatives/best-nas-os) roundup.
Which Linux OS is best for home use?
Split the question. For a desktop you sit at, Linux Mint or Ubuntu Desktop are the easy picks. For the server in the closet, Debian or Ubuntu Server, installed headless with no desktop environment at all.
What OS replaced CentOS?
CentOS Linux was discontinued (CentOS 7 hit end of life in June 2024) and CentOS Stream took its name upstream. The drop-in replacements are AlmaLinux and Rocky Linux, both free rebuilds compatible with RHEL. For a home server, AlmaLinux is the one to grab if you want that ecosystem.
Is there a free Linux OS for a home server?
Nearly all of them are free. Debian, Ubuntu Server, AlmaLinux, Rocky Linux, OpenMediaVault, and Proxmox VE cost nothing to install and run. Ubuntu Pro and Proxmox's enterprise repo are optional paid extras, not requirements.
Should my home server have a desktop (GUI)?
No. A desktop environment burns RAM and adds updates for software you'll never use on a server. Install headless and manage it over SSH. If you want something graphical, web UIs cover it: Cockpit on Debian, Ubuntu, or AlmaLinux, or the built-in interfaces in Proxmox and OpenMediaVault.
Debian or Ubuntu Server for a home server?
Debian if you value stability and a system with no commercial agenda; it's the default for a reason. Ubuntu Server if you want newer kernels for recent hardware, more step-by-step guides, and five years of LTS updates (twelve with the free personal Ubuntu Pro). You can't really go wrong with either.
Can I just run Proxmox as my home server OS?
Yes, and plenty of homelabs do. Proxmox VE is Debian underneath with a hypervisor on top, so one box can run an OPNsense VM, a NAS VM, and LXC containers for everything else. The tradeoff is more RAM and another layer to manage. If you'd only ever run Docker containers, plain Debian is simpler.