Digital products & websites
From first sketch to production: interfaces, content and the code underneath. Built to last, not to be rebuilt every two years.
Digital workshop · Denmark
Sommer Systems
The workshop behind a family of Danish digital ventures. We design them, build them, run them — and own the infrastructure they run on.
Family Mission Driven InnovationAnita SommerKarsten Sommer
What we do
One team, the whole stack
E-commerce
Online shops that are fast, calm and fully owned — catalogue, checkout, fulfilment and the numbers behind them.
Hosting & operations
Our own servers, monitored and maintained. Backups that are tested, updates that are planned, uptime we can answer for.
Advisory & innovation
Research-backed help with the hard questions — what to build, why it matters, and how to make it hold up under real-world pressure.
Our ventures
A family of brands
Some are live today. A few are still being built — same foundation either way.
Mission Driven Innovation
Anita Friis Sommer's book and framework for innovation with purpose.
VisitAnita Sommer
Researcher, leader and author — the person behind the framework.
VisitKarsten Sommer
Personal notes, photos and projects — thoughts free of feeds and formulas.
VisitSpritten JMF
Shift scheduling for Spritten, Karsten's bar at Jelling Musikfestival.
VisitDinStue.dk
Nordic furniture and interiors.
Coming soonCoding Kids
Coding classes that teach children to build, not just click.
Coming soonMit Grønne Liv
Practical ideas for a greener everyday life.
Coming soonGoCamp
Tools and sites for camps, events and the people who run them.
Coming soon
Selected client work
- Nordic Harmony — Wellbeing e-commerce store — design and build.
- MyAnt — Danish handcrafted wooden keepsakes — webshop and brand.
Infrastructure
We run our own stack
Most of the web rents its foundations. We don’t. Sommer Systems operates its own servers — two machines, in our care, doing honest work.
It means our ventures aren’t hostage to a platform’s pricing, politics or shutdown notice. Data stays where we put it. When something breaks, we have the keys.
The same discipline is available to clients who’d rather own their setup than lease it.
- ild Debian
- Web hosting — HestiaCP, nginx, PHP, MariaDB. Home to this site and a dozen more.
- jord Ubuntu
- Application host — Docker for the services below.
- Nextcloud
- Files, calendars and contacts — ours, not a big-tech account.
- Gitea
- Source control for every line we ship.
- Immich
- Photo library, self-hosted, full resolution.
How we work
Four rules we don’t bend
01
Own the whole stack
Design, code, servers and backups under one roof. No finger-pointing.
02
A small senior team
The people who scope the work are the people who do it.
03
Built to last
We optimise for the version of the site that’s still good in five years.
04
Danish and independent
Privately held. No outside investors, no growth targets we didn’t set.
The people
A family company, run by two
Karsten Krogsgaard Sommer
Systems & engineering
Builds and runs the technical side — the code, the servers, the deployment pipelines and the quiet maintenance work that keeps two dozen sites online. Twenty years of making software behave.
Anita Friis Sommer
Research & innovation
Associate Professor and COO at the Novo Nordisk Foundation CO₂ Research Center, former Head of Sustainable Operations at the LEGO Group, and author of Mission-Driven Innovation. Brings the rigour.
Sommer Systems began as the practical answer to a simple question: if we’re going to build digital things for a living, why not own every part of how they’re made and kept alive? Today it’s the workshop behind ventures in furniture, education, wellbeing, publishing and digital services — some live, some still being built — plus the infrastructure they all share.
Contact
Start a conversation
A new project, a venture that needs a home, or infrastructure you’d like to actually own — tell us what you’re working on.