Euro-Office is an open-source web office suite that lets organisations create and edit documents, spreadsheets and presentations together. It supports formats including DOCX, XLSX, PPTX, PDF and ODF with real-time co-editing, and is intended to be embedded in other platforms such as file-sharing, wiki and project-management tools. Nextcloud is the first to integrate it, letting users choose between Collabora and Euro-Office. A Docker image is available for testing; desktop and mobile apps are still in development.
The project was started by a group of European companies. IONOS and Nextcloud are the leading partners, alongside EuroStack, XWiki, OpenProject, Soverin, Abilian, BTactic, Open-Xchange and Office.eu. The source code is on GitHub under the AGPL-3.0 and is a fork of the ONLYOFFICE codebase. Because the code is open, you can run Euro-Office yourself or have a European provider host it, within the EU and without a foreign parent company. The project's governance is still being set up.