The suite
Seamless together, with single sign-on.
They ship together as one workplace.
Contacts
Calendar
Mail
Talk
VPN
Notes
Collab
Files
Office
Coming soon
Passwords
Sites
Forms
The gap
Self-hosted shouldn’t mean second-class.
For years, the office suite has been a SaaS stronghold. Self-hosted alternatives rarely match that polish, and they target enterprise. This leaves everyone else stuck with big tech.
What’s with the name
A circle of apps.
The name began as a nod to Berlin’s S42 Ringbahn: a loop that holds the city together. S42 is our circle of apps. Another reading: S for Simple, Solid, Smart, Secure, Seamless, Sovereign. And 42 is the answer to life’s office-suite problems.
Simple Solid Smart Secure Seamless Sovereign
Get started
Your own workplace, up in minutes.
One server, three commands, and the whole suite is running — with updates and maintenance handled for you.