CasaOS: Open Source alternative to Synology DSM in 2026
CasaOS turns any Linux server (or Raspberry Pi) into a personal NAS/dashboard with a Synology DSM-style interface, with an App Store to install self-hosted apps in one click.
Audit Snapshot
View notes →License — Matches GitHub
GitHub — Active
Latest release — v0.4.15 · 1 year ago
Docker Compose — Official installer, no compose
Production — Not production-tested by AltFreeStack
CasaOS vs. Synology DSM
Pros
- The easiest way to turn a Pi into a personal NAS
Things to consider
- Built more for home use than for production
Quick Docker installation guide
This tool doesn't install via a plain docker-compose.yml — it uses the project's own official installer. Review it before running it. See the full step-by-step guide →
💡 Official SaaS or self-hosted with AltFreeStack?
- On the official cloud: a recurring monthly fee and usage limits on Synology DSM.
- On your own VPS: 100% free software on your own server, with no artificial row, project or user limits.
# CasaOS se instala con su script oficial directamente sobre el servidor
# (es un panel para gestionar Docker/tu NAS, no una app dentro de Docker).
# Descárgalo e inspecciónalo antes de ejecutarlo — nunca lo hagas con un
# pipe directo a ciegas:
curl -fsSL https://get.casaos.io -o casaos-install.sh
cat casaos-install.sh # revísalo antes de continuar
sudo bash casaos-install.sh
This docker-compose corresponds to an actively maintained project — last commit 15 days ago.
This docker-compose not working for you? Report it on GitHub →Technical profile
- License
- Apache-2.0
- Category
- Deployment, PaaS & Hosting
- Replaces
- Synology DSM
- Tech stack
- GoVue.js
Key features
- One-click App Store with dozens of self-hosted apps
- Built-in web file manager
- Built for Raspberry Pi and mini-PCs
🌐 Connect your domain with free SSL
Step 1 — Set up the DNS
In your domain registrar's dashboard (Cloudflare, Namecheap, GoDaddy...), create a record:
- Type
- A
- Name/Host
- @ (root domain) or a subdomain, e.g. app
- Content/Value
- Your server's public IP
Wait 5 to 15 minutes for the record to propagate across the internet.
Step 2 — Automatic reverse proxy with Caddy
One single file, no Nginx config or manual certificates — Caddy issues and renews Let's Encrypt HTTPS on its own.
Create a file called Caddyfile:
yourdomain.com {
reverse_proxy localhost:YOUR_APP_PORT
}Start Caddy with this command (pulls the image and runs it in the background):
docker run -d -p 80:80 -p 443:443 --name caddy --restart always -v $PWD/Caddyfile:/etc/caddy/Caddyfile -v caddy_data:/data caddy