Europe's Sovereign Open-Source Push: Linux, openDesk, Gaia-X — 2026-09-23

Top developments

Kiel state chancellery goes almost fully Linux

Schleswig-Holstein's Staatskanzlei has switched the operating system for more than 200 employees from Windows to Linux, with only about twenty Windows workstations remaining, Digitalisation Minister Dirk Schrödter announced. The state already Rock 80 % of workstations on LibreOffice (as of December 2025), has cancelled nearly 80 percent of its Microsoft licences, and is cooperating with Thuringia on the migration. The move extends the open-source course from email and office software to the operating system itself, a template other German states are watching closely.

ZenDiS opens openDesk partner programme to private IT providers

ZenDiS, the Centre for Digital Sovereignty, has for the first time opened the openDesk partner programme to private IT and cloud service providers, structuring cooperation across three partner categories with a fourth planned. This opens the sovereign office suite beyond public administration, potentially accelerating municipal and private-sector adoption.

Municipalities show how openDesk migration works in practice

Municipalities including Neuburg an der Donau and Oberkirch are replacing Microsoft 365 with openDesk, according to Behörden Spiegel. The trade publication reports the main hurdles lie less in the software itself than in connecting specialist administrative procedures ("Fachverfahren") and ensuring sustainable operations — a key takeaway for other cities and states weighing adoption.

Nextcloud brings Euro-Office to the desktop

Nextcloud has released Hub 26 Summer, bringing the European Euro-Office suite to desktops and strengthening collaboration with European partners, ITdaily reports. Together with Les Numériques' coverage of Euro-Office as an open-source challenger to Word and Excel arriving on Windows, macOS and Linux, this marks a new front in the office-suite battle beyond LibreOffice.

Local view

German-language outlets dominate this week's coverage: heise.online and Linux-Magazin frame the Kiel chancellery switch as the logical next step after office and email migrations, while LinuxNews.de credits Digitalisierungsminister Dirk Schrödter's consistent "Abnabelung von Microsoft" strategy. Behörden Spiegel, the public administration trade outlet, highlights practical municipal lessons from Neuburg and Oberkirch's openDesk rollouts.

Context & numbers

• Schleswig-Holstein: 200+ chancellery staff on Linux, ~20 Windows machines remaining; ~80 % of administration workstations on LibreOffice (Dec 2025); nearly 80 % of Microsoft licences cancelled; cooperation with Thuringia.
• France: DINUM ordered all ministries off Windows/Microsoft 365 (8 April 2026), targeting Linux, Visio and La Suite numérique for 2.5 million public agents; each ministry must present a sovereignty plan before autumn 2026.
• Switzerland: pilot moving 3,000 of ~54,000 federal workstations to openDesk/open source, with availability target "around the end of 2027".
• EU level: the Commission's tech sovereignty package and Open Source Strategy (3 June 2026) frame sovereign, open-source-based infrastructure, with Gaia-X federated clouds and the EuroStack concept as pillars.

On the radar

• France's autumn 2026 deadline for each ministry to present its digital sovereignty plan, closing the DINUM's Windows exit window.
• Switzerland's openDesk pilot scaling beyond 3,000 workstations toward end-2027 availability for the ~54,000-device federal administration.
• private-sector uptake of openDesk following the newly opened ZenDiS partner programme — watch for the first named commercial partners and the announced fourth partner category.