Euro-Office launches – Euro-Office, Europe’s open-source alternative to Microsoft Office and Google Docs, is set to release version 1.0 on June 9. Built to feel familiar to Microsoft 365 users and to run inside existing European collaboration ecosystems, the web-based suite adds rea
By the time Euro-Office reaches version 1.0 on June 9. the message will already have been simmering for months: many countries and companies outside the US are tired of paying for software-as-a-service they consider dominated by untrustworthy American providers. The push for digital sovereignty has moved from policy slogans into product decisions—and the latest contender is a web-based office suite built to run inside Europe’s existing cloud and collaboration stacks.
Euro-Office will provide a Europe-based alternative to Microsoft Office and Google Docs. with an interface and document formats that the developers say will be familiar to any Microsoft 365 user. The suite is positioned for public authorities. education systems. and regulated industries that want to move away from US-based productivity clouds without forcing end users to abandon a Microsoft Office-style workflow.
The release itself is not a small experiment. Version 1.0 will be available on June 9 for anyone to download from the project’s public GitHub repositories. The editors cover documents, spreadsheets, and presentations, and they are designed for real-time collaboration.
Behind the launch is a coalition of European cloud and collaboration vendors: Ionos, Nextcloud, EuroStack, XWiki, OpenProject, Soverin, Abilian, BTactic, Open-Xchange, and Office.eu. Office.eu, beyond backing Euro-Office, also has its own open-source, cloud-based office suite named Office EU.
The case being made is straightforward: European corporate control paired with open licensing. in an effort to address sovereignty and transparency concerns in ways that purely proprietary US suites—or small. isolated open-source projects—have not managed. Ionos CEO Achim Weiss framed it in the language of geopolitics. saying. “With the geo-political developments we have seen in the last year. there is a clear need for a reliable. fully Microsoft-compatible and easy to use sovereign office solution in Europe. Our joint initiative delivers a suite with an extremely familiar interface and capable of working with documents, presentations, and spreadsheets.”.
Euro-Office is also aiming to remove friction for organizations that want to deploy quickly. At launch. it ships as an integrated component inside existing European collaboration ecosystems rather than as a standalone download that CIOs must wire up from scratch. In practice, the suite will be available as an office integration in products from participating companies.
One of the first entry points is the latest Nextcloud Hub 26 Spring release. where Euro-Office can serve as the in-browser editor for shared documents. Ionos’ managed Nextcloud customers will be able to install Euro-Office shortly after June 9. and Ionos plans to roll it into its broader Nextcloud Workspace offering later this summer. extending the sovereign stack across its hosted portfolio.
XWiki, a French wiki vendor, expects to integrate Euro-Office in the fourth quarter of this year. Office.eu. based in the Netherlands. has committed to rolling it out as well—putting the promise of a European-governed office suite within reach for a wider range of enterprise and public-sector users by year’s end.
Nextcloud CEO Frank Karlitschek points to a gap he says existed before this initiative. “Europe has had the technical building blocks for years. What was missing until now was an initiative to bring them together into a meaningful. comprehensive solution.” He added. “With Euro-Office. we’re not starting from scratch; instead. we’re taking responsibility for a vital piece of digital infrastructure. This finally gives organizations tools they can trust: transparent, durable, and managed in Europe.”.
The open-source pitch doesn’t stop at Europe’s borders. Even though contributors and corporate backers are firmly Europe-based and the product’s messaging is tightly coupled to EU digital-sovereignty narratives, the code is open to contributions worldwide and can be deployed globally.
Still, the project comes with its own software politics. The name Euro-Office can mislead people into thinking it is based on LibreOffice, but the developers say it is not. Euro-Office is a fork based on the open-source core of Ascensio System SIA’s OnlyOffice. Despite the name. the source material says OnlyOffice has no connection with LibreOffice’s ancestor. the Apache Foundation’s OnlyOffice—its codebases are entirely different. and they carry different open-source licenses.
There is also a licensing dispute around OpenOffice. OpenOffice’s heart is licensed under the AGPL. while Ascensio claims that Euro-Office backers should change Euro-Office’s user interface. source code. and add notifications to its code and documentation that it’s a derivative work of OpenOffice. The write-up frames this as a potentially small storm. adding. “This appears to be a tempest in a teapot; I anticipate that Euro-Office will successfully make its shipping date.”.
For users, the feature list is built around familiarity and compatibility. Euro-Office is a web-based, open-source editor for documents, spreadsheets, presentations, and PDFs. It offers real-time collaboration and support for Microsoft Office and OpenDocument formats.
It can create, open, and edit DOCX, XLSX, and PPTX files, along with OpenDocument formats ODT, ODS, and ODP. Real-time co-editing allows multiple users to work on the same document, spreadsheet, or presentation simultaneously in the browser.
Collaboration tools include comments, track changes, document comparison, and version history. The upstream feature set also includes chat with co-writers and editors while working on documents.
On the screen. the interface closely resembles modern Microsoft Office. using ribbon-style toolbars and a layout intended to make migration from Word/Excel/PowerPoint feel manageable. Like Microsoft 365, Euro-Office is explicitly designed as an online office component rather than a full desktop suite.
The question now is whether this integrated approach—tucked into ecosystems like Nextcloud Hub 26 Spring and routed through managed services—will make digital sovereignty practical for organizations that have been waiting for an office suite that feels familiar. stays transparent. and doesn’t require a risky rebuild of everything around it.
Euro-Office open-source office suite digital sovereignty Microsoft Office alternative Nextcloud Hub 26 Spring Ionos real-time collaboration DOCX XLSX PPTX OpenDocument ODT ODS ODP cybersecurity SaaS European cloud
June 9 can’t come soon enough.
So they’re just copying Microsoft Word and calling it “open source”? I mean I get the Europe sovereignty thing, but will it even work with all the old files? Also “web-based” always sounds slow to me.
Wait this is to “challenge US SaaS” but it says it runs inside European collaboration ecosystems… so like what, it can’t be used here in the US? And if it’s familiar to Microsoft 365 users, then why is it a threat? Seems like just another office website.
Digital sovereignty is just code for “we don’t want the US looking at our stuff,” right? I’d be willing to try it if it doesn’t mess up formatting. But I’m also skeptical because “open-source alternative” usually means the support is gonna be messy or half-finished. If it’s for schools and public authorities, that sounds like it’ll take forever to roll out too.