Password managers are essential in 2026. But why pay €35–€60 per year to store your most sensitive data on someone else's server?

I run Vaultwarden on a Raspberry Pi 4 with Home Assistant. Total cost: ~€10/year for the domain. Everything else is free forever.

Here's the full setup.

What You Need

Hardware:

Raspberry Pi 4 (2GB+ RAM) — Pi 5 also works

SSD recommended for reliability

Stable internet connection

Free accounts:

Cloudflare — for domain, tunnel and email routing

Tailscale — optional backup access

Free software:

Home Assistant OS running on your Pi

Bitwarden app (Android, iOS, Windows, Mac, Linux)

Bitwarden browser extension (Chrome, Firefox, Edge, Safari)

What You'll Build

By the end of this guide you'll have:

✅ Vaultwarden running privately on your Pi

✅ Accessible from anywhere via vault.yourdomain.com

✅ HTTPS encryption — no open ports on your router

✅ Free email aliases as a bonus

✅ All official Bitwarden clients working normally

Chapter 1 — Install Vaultwarden on Home…