The Swiss alternative to Microsoft 365
One sign-in.
Every app.
Mail, files, desktop apps, devices and users in one place. Hosted in Switzerland or on your own servers.
Any PC.
A thin client.
Installs from the network, updates itself at every boot, and users sign in with a passkey. Tablets and phones only need a browser, at home or on the road.
In detail
Network install
Start the PC from the network once and choose Install OS One OS. It installs to the local disk.
Always current
Every PC checks for updates at each start and once a day, so all of them run the same version.
One sign-in
The browser opens on the sign-in page. A passkey or security key, and Home is there.
Private by default
The browser profile lives in memory: nothing personal stays on the PC.
Any desktop app.
In a tab.
Windows and Linux apps from the App Store, GPU-streamed in the browser. No more GPOs: any user’s app settings can be the template for a whole group.
In detail
App Store
Pick an app in the OS One App Store and install it with one click. Then it is ready to launch.
In the browser
Each app runs on the server and shows in a browser tab, with the GPU when it needs one. Files open straight from Nextcloud.
No more GPOs
Set an app up once for one user. The app data template gives those settings to everyone in a group the first time they open the app.
Private sessions
Right-click an app for a private session: its app data is deleted when the session ends.
Passkeys.
No passwords.
Sign in once for every app. Sign out once, out everywhere.
In detail
Passkeys and keys
Sign in without a password: a passkey on the phone or laptop, or a security key with its PIN.
Second factor
An authenticator app adds a second step to the password.
Single sign-on
One sign-in opens Home, Webmail, Nextcloud, Desk Apps, RMM and every connected app.
Groups decide
Each app lists the groups that may open it. Everyone else sees "No access".
Leave
Microsoft 365.
Mail, calendars, tasks, contacts, OneDrive and SharePoint come along.
In detail
One-line setup
Run the setup command in Azure Cloud Shell. It registers the app and sends the values back, nothing to copy.
Content Sync
Pick people, content and Team Folders, then start. Existing data is kept, nothing is deleted.
Files to Nextcloud
OneDrive goes to each person's files, SharePoint libraries to Nextcloud Team Folders.
DNS switch
The DNS page plans the records for mail and the apps and applies the ticked ones.
Every device.
One place.
Remote desktop in the browser. One script for a whole group.
In detail
Device list
Every PC and server with its status, user and address, grouped by location.
Remote desktop
Open a device's desktop or terminal from the browser.
Scripts on groups
Run a script on every selected device at once, or on a schedule.
Results in one place
Every run with each device's result, exit code and duration.
Always current.
Never broken.
Every service in one click, checked after every update, rolled back if unhealthy.
In detail
One click
Admin updates one service or all of them, with the progress in view.
Health checks
After every update the service is checked before it counts as done.
Automatic rollback
A service that is not healthy goes back to its previous version on its own.
Nightly window
Updates from the stable channel run at night, tested on our platform first.
Sovereign.
And connected.
Data in Switzerland
Developed in Switzerland and hosted there with OS Infrastructure or on your own servers, not with Microsoft, Google or Amazon.
Open source, no lock-in
Built on open-source software such as Nextcloud and on open standards, so your data can always move with you.
Everything connected
One sign-in for every app, desktop apps that open files straight from Nextcloud, and one Admin for users, groups, mail and folders.
Old PCs keep working
Support for Windows 10 has ended. PCs that cannot run Windows 11 carry on as OS One thin clients.
Is OS One an alternative to Microsoft 365?
Yes: mail, calendars, contacts, files, office documents, chat and video calls, sign-in and devices, hosted in Switzerland or on your own servers. Mail, calendars, tasks, contacts, OneDrive and SharePoint move over from Microsoft 365.
What does OS One replace?
Outlook and Exchange with mail, calendars and contacts; OneDrive and SharePoint with Nextcloud; Word, Excel, PowerPoint and Adobe Acrobat with Euro-Office in the browser; Teams with chat and video calls; Entra ID with one sign-in with passkeys; Group Policy with group templates in Admin; Azure Virtual Desktop and Citrix with Windows and Linux apps in the browser; TeamViewer with RMM; Windows 10 PCs with thin clients running OS One OS.
Is OS One an alternative to Google Workspace?
Yes. Gmail, Drive, Docs and Meet have their counterparts in OS One: mail, files in Nextcloud, office documents in the browser, chat and video calls.
How does OS One compare to openDesk?
Like openDesk, OS One is built on open-source software such as Nextcloud, but integrates it more deeply: desktop apps open files straight from Nextcloud, and Team Folders are managed in Admin. The whole system is more interconnected and faster: one sign-in and sign-out for every app, and groups that set mail, folders and apps in one place. OS One also brings Windows and Linux apps in the browser, device management, its own thin-client OS and the move from Microsoft 365, run in Switzerland or on your own servers.
Can OS One replace our Exchange server?
Yes. Mail, calendars and contacts run on the OS One mail server, with webmail and one sign-in, in Switzerland or on your own servers.
Is Nextcloud included?
Yes, Nextcloud is built in: files, Team Folders, office documents, chat and video calls, with the same sign-in as every other app.
Can we keep our Windows programs?
Desk Apps runs Windows and Linux programs on the server and streams them into a browser tab, GPU-accelerated, with their files in Nextcloud. No Citrix or terminal server needed.
Can Desk Apps use USB devices?
Yes, with OS One USB: a small box at your site, powered over the network cable. Plug in serial cables, licence dongles, programmers, label printers or scales, and your Desk Apps use them as if they were plugged into your own PC. No drivers, nothing to install on the PC, no VPN and no port forwarding. Admins give each device to a group.
What about PCs that cannot run Windows 11?
They carry on as thin clients: OS One OS installs from the network, updates itself at every boot, and users sign in with a passkey.
Where is our data?
In Switzerland with OS Infrastructure, our own Swiss hosting. OS One also runs with any other provider or on your own hardware.
