01
One system, not five
Bookings, email, invoices, customer history and reports in one codebase. When a booking changes, invoicing knows. When a customer emails, the history is right there.
Operating system for small business
One system. Every function.
You started the company for the craft, not to manage five subscriptions that do not talk to each other. The booking tool does not know what the invoicing tool knows. The email platform does not know what bookings knows. We built one system where everything connects, runs on your own server, and is yours to own forever.
For solo founders and small teams who would rather pay for one thing that works than five that almost do.
How we are different
Build yourself free, not locked into the cloud.
Most SaaS vendors want you to pay every month forever. We do the opposite. One-time delivery. You own the source code. If we disappear tomorrow, the system runs for ten more years.
02
You own the system
One-time delivery, no subscription. We hand over the code, the credentials and a short walkthrough. No locked features, no vendor lock-in, no price hike on a Sunday.
03
Local AI on your server
We run a local model on your machine. Customer data, email history and bookings never leave your server. EU sovereignty, GDPR-first, no external LLM vendor logging your business.
04
Pull-the-plug architecture
If we go bankrupt tomorrow, the system still works. Open architecture, documented code, standard tech. Any developer can take over later if you want to.
How it works in 30 seconds
Three steps. No surprises.
From the first email to a live system. No subscription, no vendor lock-in, no thirty-page proposal. You see the whole road before you step on.
01
We talk for 30 minutes.
Tell us what eats your time and what you pay for today. You get a written reply with three things we would change first.
02
We build in 30 to 60 days.
Mostly hands-off for you. We check in weekly so nothing drifts in a direction you did not ask for. You see progress live.
03
You own it.
No subscription. We hand over keys, code and a walkthrough. Optional support if you want it. You can move on whenever.
What you get
Five concrete results. No tech jargon.
This is not a feature list. It is what actually leaves your desk when the system is in place.
Bookings, email, invoices and customer history in one codebase.
When a customer books, a contact is created automatically. When a booking is delivered, the invoice draft appears. No copy-pasting between tools. Everything in one place.
One-time delivery. You own it. No subscription.
You pay once for the build. Then it is yours. No monthly cost eating your margin. No price hikes you cannot control. Optional support if you want it.
Pull-the-plug architecture. Your business runs even if we vanish.
Open architecture, standard tech, documented code. We use tools that will exist in ten years. Any developer can take over if you want to switch vendor later.
Local AI model. Your data never leaves your server.
We run a Swedish-language model locally on your machine. No customer data goes to OpenAI, Google or any external vendor. EU sovereignty for real, not just in the marketing.
Easy to extend yourself.
Open architecture means you, or any developer, can add features later without waiting for our roadmap. We use Python, Postgres, React. Standard tech, not our own proprietary stack.
One invoice to understand. Not five you forgot about.
Today you pay five subscriptions. You do not remember what they all do. Here you see everything in one place. Bookings, email, invoices, customer history, reports. One system. One price. One invoice.
Proof
Real work, real numbers.
The OS concept is proven inside RestaurangAI since 2025. Same underlying architecture, adapted for the hotel and restaurant industry. WilhelmssonOS is the horizontal version for small business owners across all industries.
Granna Strandhotell, one of RestaurangAI's first customers
Same underlying architecture, adapted for the hotel industry. Documented value 19,500 to 38,000 SEK per year in the marketing module alone. Madeleine Camenius confirms the numbers and is happy to take a call if anyone wants to hear more.
WilhelmssonOS is the same foundation, rebuilt for small business owners who are not hotels. Consultancies, craftsmen, course leaders, clinic owners, anyone running their own thing and tired of the SaaS jungle.
Contact
Email Rickard directly
A free walkthrough, no slides.
Send a one-line email with what you do and what monthly subscriptions you pay for today. You get three things we would change first, written for your company, not a template. If it gets interesting, we talk.