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  OPEN SOURCE QUIZ · DIGITAL SOVEREIGNTY

Do you know the stack?

These are the logos of some of the open-source projects we build with every day — from Docker and Proxmox to tools only a few people recognise. Can you name the project behind the mark?

01 Quiz

Name that logo.

Ten logos, five options each round. The brand only shows once you have answered. Tip: keys 1–5 let you pick faster.

Open source

Every project here is inspectable, auditable and free of licence gates.

No lock-in

Open formats and interfaces keep data and operations portable.

Data ownership

Workloads run on your hardware, in your data centre, under your control.

Broad base

Over 300 projects in the toolbox — from the classics to the niche.

02 / Enquire Direct

Open stacks, run properly.

Ready to move off vendor lock-in and onto an open, sovereign stack? Tell us briefly what you have in mind — we will propose the architecture and the path.