Your own private cloud, made simple.
Own your data
Actually simple
Genuinely private
Three steps to your own cloud
Set it up once
Create your account in the browser
Pick your apps
Explore the apps
Apps that work together
Immich
Privacy configured Privacy grade B (A is best, D is worst)Talks to outside services out of the box — MOS turned those parts off for you.
ONLYOFFICE
Privacy configured Privacy grade B (A is best, D is worst)Talks to outside services out of the box — MOS turned those parts off for you.
Radicale
Private by default Privacy grade A (A is best, D is worst)Runs entirely on your machine. Nothing leaves your server unless you share it.
Seafile
Privacy configured Privacy grade A (A is best, D is worst)Talks to outside services out of the box — MOS turned those parts off for you.
Stirling PDF
Privacy configured Privacy grade B (A is best, D is worst)Talks to outside services out of the box — MOS turned those parts off for you.
Vaultwarden
Privacy configured Privacy grade B (A is best, D is worst)Talks to outside services out of the box — MOS turned those parts off for you.
Your favorite app isn't locked out
Bring your own app
- Preview first — web addresses, storage, and app connections it wants, in plain language
- Labelled External · Unverified everywhere it appears — no borrowed trust
- Restricted by MOS: no privileged containers, no reaching into other apps' secrets
- Managed like any other app afterwards: backups, updates, restart, uninstall
Make your app MOS-installable
- One manifest describes your routes, storage, setup fields, and health check
- Your users' data stays on their hardware — the way your project intended
- The same packaging shape MOS uses for its own catalog apps
You might feel right at home
As easy as the phone in your pocket
A catalog you just tap through

Know exactly what you're getting

The privacy grade, with receipts

Apps that plug into each other

Guided onto your other devices

Back up your whole suite to storage you control

Where should your cloud live?
USB installer
- A spare mini-PC or PC to dedicate
- Erases the target disk (Ubuntu Server 24.04-based)
- Costs only your electricity — usually a small amount each month
- Best privacy — nothing leaves your home
One command
- A small server you rent — about $20–25 a month (DigitalOcean is the tested reference)
- Your provider's web console or SSH — nothing to install on your computer
- Reachable from anywhere you allow
Managed hosting
- Nothing to set up yourself
- MOS-provisioned and maintained
- A paid subscription — pricing announced at launch
- Planned — not yet available
Backups, updates, and a serious trust architecture
Private HTTPS at home
Secrets stay secret
A catalog your server can verify
Apps update on their own schedule
Your apps can't change under you
Updates that put things back
Honest answers
Do I need to be technical?
Short answer: no — if you go with a cloud server.
Longer answer: it depends on where MOS lives. A rented cloud server just means following our step-by-step guide, with video walkthroughs on the way — no experience needed.
Your own hardware is more hands-on: it's like installing a Linux distribution, only simpler — flash a USB stick, boot from it, and wait. There are no prompts to answer; MOS sets everything up with sensible defaults. If you've ever installed an operating system, you're more than experienced enough. If not, a cloud server is the easier place to start.
Either way, once MOS is running everything happens in the browser and works for anyone.
Is it really free — what does it actually cost?
MOS and every app in the catalog are free and open source — no license keys, no subscriptions, no paid tier.
The only real cost is the computer it runs on: a little electricity if you use a machine at home, or a small monthly fee for a rented cloud server (about $20–25 a month for the tested reference size). A one-click managed hosting option is coming for people who'd rather pay MOS to run it all for them.
Where does my data actually live?
On the machine you installed MOS on — your home mini-PC or your cloud server. MOS never routes your data through a MOS-owned cloud, and the platform contains no telemetry at all: no account, no analytics, nothing reporting back to us. We don't know that you installed it.
The one exception is this marketing page, which counts anonymous visits using analytics we run ourselves. The docs have none, and your suite has none. The privacy policy spells out every connection your server makes.
How do my apps stay up to date?
Each app updates on its own schedule, independently of MOS itself. Your server periodically checks a signed catalog for newer app versions and shows an Update available badge — so a security fix for your password manager reaches you without waiting for a MOS release.
Nothing updates behind your back. You see what changes — new settings, breaking changes, whether the privacy assessment moved — and you press the button. If an update fails, MOS puts the app back the way it was, or tells you exactly what it couldn't undo.
Can I install an app that isn't in the catalog?
Yes. Paste a GitHub repository URL into the Apps search and MOS will fetch it, check it, and show you what it wants before anything is installed — which addresses it asks for, which storage, which other apps it wants to reach.
It's labelled External · Unverified everywhere it appears, because we haven't reviewed it and we won't pretend otherwise. Building it runs the publisher's own instructions on your server, so it's genuinely your call — MOS's job is to make sure it's an informed one.
What if I want to leave?
Everything runs on standard open-source apps with standard data formats. Manual whole-suite backups go to an encrypted USB drive on own hardware or a mounted block-storage volume on a cloud server. Bundles are not encrypted by MOS, so the destination must be protected like the server itself.
It's beta — is it safe to use?
MOS is version 0.15.0 and improving quickly. Every change runs an automated test suite before it lands, the whole install-to-apps flow is exercised on real virtual machines, and every image is pinned to an exact digest. The changelog is public.
Trust is the product, so here's the honest part: pre-1.0 releases can include breaking changes, and we don't yet run the full end-to-end suite automatically on every release. Treat MOS as ready for evaluation and non-critical use for now: keep an independent backup of anything you can't afford to lose, and take a backup before you update — the button is right there.




