CasaOS vs YunoHost vs StartOS — Which Home Server OS Is Right for You?

Self-hosting used to mean a rack of servers, a static IP, and a weekend of reading man pages. These days it means something far more accessible: a small box under your desk, a web interface, and a few clicks to get your own cloud. The home server operating system you choose decides how much of that old complexity you have to deal with — and three open-source projects have emerged as the favourites for very different reasons.

CasaOS, YunoHost, and StartOS all let you run your own services at home, but they come from three different philosophies. CasaOS is the pretty, Docker-first dashboard that turns almost any machine into a personal cloud. YunoHost is the battle-tested Debian distribution with a huge one-click app catalogue. StartOS is a purpose-built graphical server OS with deep Bitcoin and Lightning integration. Let’s break them down side by side.

CasaOS — The Elegant Personal Cloud

CasaOS describes itself as “a simple, easy-to-use, elegant open-source personal cloud system”, and the tagline is accurate. Released under the Apache-2.0 licence with over 36,000 GitHub stars, it originated as the pre-installed system for the crowdfunded ZimaBoard single-board computer before growing into a standalone project that runs on almost anything — ZimaBoard, Intel NUC, Raspberry Pi, or that old laptop you have in a drawer.

What makes CasaOS distinctive is its focus on design. The web UI is clean and modern, designed for home scenarios with no code and no forms in sight. Apps install from an app store with one click, and popular self-hosted services like Nextcloud, Home Assistant, AdGuard, Jellyfin, and the *arr media stack are all available. Behind the scenes, everything runs as Docker containers, which means the entire Docker ecosystem — over 100,000 applications — is accessible from a single dashboard.

Storage is treated as a first-class feature: drive and file management is what-you-see-is-what-you-get, with no technical background required. System and app widgets show resource usage and app status at a glance. Installation is a single command on Debian 12, Ubuntu Server, or Raspberry Pi OS:

curl -fsSL https://get.casaos.io | sudo bash

If you want the fastest path from zero to a beautiful personal cloud with Docker flexibility, CasaOS is hard to beat.

YunoHost — Self-Hosting Made Simple, the Mature Way

YunoHost has been around since February 2012 and it shows — in the best possible way. It’s a full server distribution based on Debian GNU/Linux, released under the GNU AGPL v3 licence and maintained entirely by volunteers. Its mission is to democratise self-hosting while keeping everything reliable, secure, ethical, and lightweight.

Where CasaOS is a layer on top of your existing OS, YunoHost is the OS. You install it on Debian-compatible hardware or a VPS, and you get a friendly web admin interface plus a handy CLI. The app catalogue is genuinely huge — over 500 one-click applications spanning websites, cloud sync, communication, RSS readers, media, and more. Apps install in a few clicks and are immediately usable, which is exactly the promise self-hosting needs to keep.

YunoHost’s depth is in the details. It manages users through LDAP, handles domain names, and creates and restores backups from the web interface. Its user portal provides single sign-on across all your apps via NGINX and SSOwat. It bundles a complete email stack — Postfix, Dovecot, OpenDKIM, PostSRSd — so you can host your own mail. SSL certificates come from Let’s Encrypt automatically, and security features include fail2ban and an nftables-based firewall. The current release, YunoHost 13.0.5, tracks Debian 13.

If you want the most mature, all-in-one self-hosting platform with a huge community and an email stack that just works, YunoHost is the safe, proven choice.

StartOS — The Purpose-Built Graphical Server OS

StartOS, built by Start9, takes a different approach entirely: it’s a complete Linux distribution designed from the ground up as a personal server OS. The code is MIT-licensed and lives in the Start9Labs/start-technologies monorepo, with a Rust backend, an Angular frontend, and a Node.js container runtime using LXC. Services run in isolated LXC containers, packaged in a signed, merkle-archived format (S9PK) that supports partial downloads and cryptographic verification.

What really sets StartOS apart is its focus on sovereignty and the Bitcoin ecosystem. The Start9 Marketplace includes full Bitcoin and Lightning node software, BTCPay Server, and other payment infrastructure — plus communication platforms like Matrix and SimpleX, and cloud storage like Nextcloud and Vaultwarden. If running your own Bitcoin node is part of the plan, StartOS is the only one of these three that treats it as a headline feature.

The hardware story is unique too. You can install StartOS on your own hardware via their install guide, but Start9 also sells pre-built servers that are plug-and-play. The ecosystem extends beyond the OS itself: StartTunnel gives you a self-hosted VPN and reverse proxy for public access without third-party tunnels, and StartWRT is an OpenWrt-based router OS for home self-hosting.

If you want deep privacy, cryptographic integrity, and Bitcoin/Lightning integration — and you’re comfortable with the ecosystem’s smaller, more specialist community — StartOS is a serious contender.

Head-to-Head Comparison

Ease of Setup

• CasaOS: A single install command on top of an existing Debian/Ubuntu/Raspberry Pi OS install. Fastest to first app — minutes, not hours. Best for repurposing hardware you already own.
• YunoHost: A full distribution install, either on bare metal or a VPS. The installer handles partitioning, the base system, and the admin interface. Slightly more involved, but you get a complete system rather than a layer.
• StartOS: Easiest with Start9’s pre-built hardware — plug it in and the setup wizard walks you through. Installing on your own hardware follows their documented guide, which is more involved than the other two.

App Ecosystem

• CasaOS: A curated app store plus the entire Docker ecosystem — 100,000+ containers installable from the dashboard. Massive flexibility, with the caveat that Docker containers can vary in quality and maintenance.
• YunoHost: Over 500 one-click applications, each packaged specifically for YunoHost with automatic configuration, SSL, and SSO integration. The catalogue is curated and consistent, though smaller than the raw Docker universe.
• StartOS: A smaller, community-maintained marketplace of S9PK packages focused on privacy, communication, and Bitcoin. Quality is high and packages are signed, but the catalogue is the smallest of the three.

Hardware Requirements

• CasaOS: Runs on amd64, arm64, and armv7 — ZimaBoard, Intel NUC, Raspberry Pi, old computers. Officially supports Debian 12, Ubuntu Server 20.04, and Raspberry Pi OS.
• YunoHost: Debian-compatible hardware or any VPS. Lightweight enough for small single-board computers, and equally at home on a rented server.
• StartOS: Works on x86 hardware via the install guide, with pre-built Start9 servers available. The most opinionated about hardware of the three.

Privacy and Security Model

• CasaOS: Everything runs as Docker containers on your own hardware. Security relies on the underlying OS and the containers you choose — flexible, but the responsibility is on you.
• YunoHost: The most turnkey security posture: Let’s Encrypt SSL, fail2ban, an nftables firewall, LDAP user management, and a full email stack with OpenDKIM. Regular, centrally-managed upgrades.
• StartOS: The strongest cryptographic guarantees: signed packages with merkle-archived integrity checking, isolated LXC containers, and a focus on self-sovereignty. Built for people who treat their server as a fortress.

Community and Support

• CasaOS: Large and active GitHub community (36,000+ stars), Discord, and GitHub Discussions. Strong momentum, backed by the ZimaBoard ecosystem.
• YunoHost: The most mature community, running since 2012. Extensive documentation, translation platform, active chat rooms, and support from foundations like NLnet and NGI.
• StartOS: Smaller but dedicated community around the Start9 ecosystem, with Matrix chat rooms and solid documentation. More specialised — great if you’re in the Bitcoin space, quieter outside it.

Which One Should You Pick?

Choose CasaOS if: you want the prettiest UI and the fastest Docker app installs. You have a Raspberry Pi, NUC, or old computer sitting around, and you want to turn it into a personal cloud this afternoon. The Docker ecosystem gives you unmatched flexibility.

Choose YunoHost if: you want the most mature app catalogue and Debian stability. You’d rather have 500+ carefully packaged apps with automatic SSL, SSO, and backups than the whole Docker universe to manage yourself — and you might even want to host your own email.

Choose StartOS if: you want deep privacy and crypto integration and don’t mind buying dedicated hardware. You’re running a Bitcoin or Lightning node, you care about signed packages and cryptographic integrity, and you want a server OS purpose-built for self-sovereignty.

The Bottom Line

There’s no single “best” home server OS — the right choice depends on your hardware, your appetite for complexity, and what you want to run. CasaOS is the easiest on-ramp with the prettiest interface and the full Docker universe behind it. YunoHost is the most mature and complete platform, ideal if you want a reliable all-in-one system with a huge catalogue and a real email stack. StartOS is the specialist’s choice, built for privacy maximalists and the Bitcoin community who want cryptographic guarantees and dedicated hardware.

All three are free and open-source, and all three let you take back control of your data. Whichever you pick, you’ll be joining one of the healthiest movements in software today — self-hosting your own internet, one service at a time.

Looking for more self-hosting software? Browse our Self-Hosted Apps directory for more free and open-source tools you can run at home.