Düsseldorf · Software House

Software that belongs to you.
Data that stays put.

We build fair alternatives to the big platforms — on German servers, GDPR-native, with no lock-in. From the office to real estate.

What connects us

Four principles — true in every product that bears this name.

01

Sovereignty

German servers, on-premise possible, no US jurisdiction. You keep control over your data — today and after any change of provider.

02

Fairness

Transparent pricing, no subscription lock-in, no hidden clauses. The same terms for professionals and private users.

03

GDPR-native

Privacy by design instead of bolted-on cookie banners. We measure what we need — and don't track what's none of our business.

04

Compliance-ready

GxP, BSI, KRITIS, air-gap — available where needed. One capability among several, not an industry straitjacket.

Products

Different tools, one standard.

Each product stands on its own — and shares the same attitude as the others.

Beta phase

Fortress Office

The sovereign Microsoft 365 alternative. Fourteen modules, one Rust backend, no cloud lock-in.

  • Writer · Calc · Presenter · Mail · Chat · Video · Calendar
  • Project management, wiki & DMS built in
  • Local AI (Albert AI) — fully offline capable
  • Air-gap capable · on-premise or managed hosting
  • GxP-ready, EU word mark filed
Request a demo
Live

Wohnweite

A fair real-estate portal. Pay-per-listing instead of subscription traps — for agents, private sellers and searchers.

  • €9.90 rent · €19.90 sale — per listing / month
  • OpenImmo integration with onOffice, FlowFact, Propstack
  • AI listing drafts & market-price analysis
  • Servers in Germany, tracking-free
Visit the platform: wohnweite.de
Book cover: Immobilienbewertung verstehen by Conrad Bruchmann
New · just released

Immobilienbewertung verstehen

A German-language reference book by Conrad Bruchmann. From the standardised market value to machine-learning models. 448 pages, BoD, €29.90.

  • Comparative, income and asset-based approaches with worked examples
  • AVM, hedonic regression, random forest, Shapley values, XAI
  • Current legislation: ImmoWertV 2021, BelWertV, GEG 2024
  • ISBN 978-3-696-38261-2
Order from BoD
In development · 2026

Steroids

AI-assisted software development — air-gap capable. From a requirement to tested, documented, deployable software.

  • 100% air-gap capable — no cloud dependency
  • Requirements in, software out
  • Automated tests & documentation
Get updates
Who it's for

Three worlds, one attitude.

Enterprises & public sector

Organisations that question Microsoft 365, need compliance, or want their IT sovereignty back. Fortress Office and Steroids — suited to pharma, defense, critical infrastructure and anyone who thinks alike.

→ See the products

Real-estate professionals & owners

Agents who want to list without subscription traps, and private sellers looking for a fair platform. Wohnweite — started in Düsseldorf, built for all of Germany.

→ Visit the platform

Buyers, advisors, surveyors

Anyone who wants to assess property values soundly will find the standardised methods plus current ML approaches across 448 pages in “Immobilienbewertung verstehen”.

→ To the book
About us

A Düsseldorf software house with a clear stance.

We build software we wanted to use ourselves — and that we don't have to make palatable to customers through lock-in clauses.

Our products share one architectural conviction: data belongs to the user, the provider is replaceable, and complexity sits in the backend, not on the bill. What we can't or won't run ourselves, we don't run.

Conrad Bruchmann is the company's founder and author of the reference book “Immobilienbewertung verstehen”. Focus areas: software architecture, regulated industries, agile methods.

Registered office
Düsseldorf, Liefergasse 4
Register
HRB 111039, Düsseldorf Local Court
Managing Director
Conrad Bruchmann
VAT ID
DE461249484
Contact

Let's talk.

Interested in a demo, a pilot project, or have a question about one of our products? Drop us your email — we'll get back to you personally, no funnels and no newsletter spam.

✓ Thank you! We'll be in touch shortly.

Prefer email directly? service@bruchmann-tec.com

Email

service@bruchmann-tec.com

Address

BRUCHMANN [TEC] INNOVATION GMBH
Liefergasse 4 · 40213 Düsseldorf