QUELLCODE&SÖHNE

// SOFTWARE · AUTOMATION · SELF-HOSTED · WEBSITES

SOFTWARE, AUTOMATION AND WEBSITES FROM ISERLOHN.

We develop software, apps and websites and automate your workflows — on your own infrastructure, in line with German data protection standards. No US cloud. No dependency.

$

ISERLOHN, DE GDPR-COMPLIANT FIXED PRICE

// REFERENCES

See for yourself.

All projects →
Krüger Bedachung

Crafts

Krüger Bedachung

Services, reviews, call button.

Open demo ↗
Ristorante OLIVA

Hospitality

Ristorante OLIVA

Menu, reservations, warmth.

Open demo ↗
Physiotherapie Berger

Practice

Physiotherapie Berger

Appointments, team, accessible.

Open demo ↗
FALK. Fotografie

Portfolio

FALK. Fotografie

Dark mode, gallery, animation.

Open demo ↗
Forstbetrieb Steiger

Forestry

Forstbetrieb Steiger

Video hero, parallax, counters.

Open demo ↗

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// REDESIGN

Renew a website.

Learn more →

Same content, modern build. Old site on the left, new on the right — click through. (Demos are in German.)

Your idea. Our code.

// SERVICES

What we take off your hands.

All services →

// HOW WE WORK

Listen first. Then build.

Most providers sell a finished package and hope you fit into it. We do it the other way round: in the free initial conversation we work out what you actually need — and just as importantly, what you don't.

  • We ask first: what should the solution do for you — and how will you know it works?
  • You never pay for scope nobody uses. No website builder, no monthly rent for modules you never touch.
  • A fixed price and a firm date instead of an open invoice — you know where you stand beforehand.
  • The source code and documentation are yours. No vendor lock-in, not even with us.
  • If something is added later, we add it — instead of starting from scratch.

What we build — all services →
Websites by industry →

// DATA PROTECTION

German standards. No compromises.

  • Operated exclusively on your own infrastructure
  • GDPR-compliant — suitable for the public sector as well
  • No data sharing with third parties or US cloud providers
  • Complete documentation and source-code transparency
  • Germany-based contact, contract governed by German law

Read the privacy policy →

Maximilian Grätz, founder of Quellcode & Söhne

// YOUR CONTACT

Behind the code there is a name.

At Quellcode & Söhne you don't talk to a sales team or a hotline. You talk to the person who builds your solution — from the first conversation to go-live. And if I don't think something makes sense, I'll tell you before it costs you money.

Signature of Maximilian Grätz

Maximilian Grätz — Founder & Developer

Let’s talk. kontakt@quellcode-und-soehne.de →