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SovEU · Atlas · European alternatives · office-suite
European alternatives to Microsoft 365
European companies mapped as alternatives to Microsoft 365. Each carries an evidence-led sovereignty profile — jurisdiction, hosting, US exposure, DPA and more — reviewed by SovEU. Profiles are descriptive, not a compliance verdict.
2 alternatives
68LV
ONLYOFFICE
Open-source online office suite developed by Ascensio System SIA in Riga, Latvia; available self-hosted or as cloud.
European companyOpen source
MediumView →
62GB
Collabora Online
Self-hostable online office suite based on LibreOffice technology, developed by Collabora Productivity in the UK.
European companyOpen source
MediumView →
Compare side by side
The same evidence-led signals across each alternative. A blank cell (“—”) means the signal isn't recorded — never a negative claim — and the score is a transparent signal score, not a compliance verdict.
| Signal | ONLYOFFICELV | Collabora OnlineGB |
|---|---|---|
| Sovereignty score | 78/ 100Strong sovereignty signals | 72/ 100Strong sovereignty signals |
| HQ jurisdiction | Latvia | United Kingdom |
| Primary hosting region | — | — |
| EU data residency option | — | — |
| US cloud dependency | — | — |
| Data Processing Agreement | — | — |
| Subprocessor list published | — | — |
| Self-hosting option | Yes | Yes |
| Open source | Yes | Yes |