European alternatives to Microsoft 365

Ashampoo Office is a desktop office suite developed by Ashampoo GmbH & Co. KG, a company based in Rastede, Germany. It is typically used for creating and editing documents, spreadsheets, and presentations on Windows, with strong compatibility with Microsoft Office file formats. It focuses on a locally installed, offline-first approach to office productivity.

Calligra Suite is a free and open-source office and graphics suite developed by the KDE community, represented legally by KDE e.V., a German nonprofit based in Berlin. It is typically used for word processing, spreadsheets, presentations, and vector graphics on Linux desktops. The provider is based in Germany and focuses on open standards and open-source freedom.

Collabora Online is an open-source document editing suite developed by Collabora Ltd, a company based in Cambridge, United Kingdom. It is typically used for collaborative editing of documents, spreadsheets, and presentations in a browser, and is designed to be integrated into platforms such as Nextcloud. The product is based on LibreOffice and focuses on compatibility with Microsoft Office formats and flexible European deployment.

CryptPad is an end-to-end encrypted collaborative office suite developed by XWiki SAS, a French company based in Paris. It is typically used for creating and editing documents, spreadsheets, presentations, and forms in a privacy-focused online environment. The provider is based in France and focuses on zero-knowledge encryption, meaning no data is readable by the service provider.

Kolab Now is a secure email and groupware service developed by Kolab Systems AG, a Swiss company. It is typically used for team communication and collaboration, combining email with calendar, contacts, tasks, notes, and file storage in a single platform. The provider is based in Zürich, Switzerland, and focuses on open-source groupware hosted entirely on Swiss infrastructure.

kSuite is a cloud-based productivity and collaboration suite developed by Infomaniak Network AG, a Swiss company based in Geneva. It is typically used as an integrated alternative to Microsoft 365, covering email, cloud storage, document editing, video conferencing, and team messaging. The provider is based in Switzerland and focuses on data sovereignty, with all data hosted exclusively in Swiss data centres.

LibreOffice is a free and open-source office suite developed by The Document Foundation, a German nonprofit based in Berlin. It is typically used for word processing, spreadsheets, presentations, and other office tasks. The provider is based in Germany and focuses on open standards, data independence, and compatibility with Microsoft Office formats.

Mailbox.org is an encrypted email and productivity service developed by Heinlein Hosting GmbH, a German company. It is typically used for professional team communication and collaboration, combining email with calendar, contacts, video conferencing, cloud storage, and an integrated office suite. The provider is based in Berlin and focuses on data sovereignty, with all servers operating exclusively in German data centres.

Nextcloud Office is a collaborative document editing environment built into Nextcloud Hub, developed by Nextcloud GmbH, a German company based in Stuttgart. It is typically used for viewing and collaborating on documents, spreadsheets, and presentations within a self-hosted or partner-hosted Nextcloud environment. The provider is based in Germany and focuses on digital sovereignty, self-hosting, and GDPR-compliant collaboration.

Proton for Business (also referred to as Proton Workspace) is a business productivity suite developed by Proton AG, a Swiss company. It is typically used by teams and organisations that need encrypted team communication and collaboration tools under a single subscription, including email, calendar, file storage, video conferencing, and password management. The provider is headquartered in Geneva, Switzerland, and focuses on data protection for organisations under Swiss and European privacy law.

SoftMaker Office NX is a cross-platform office suite developed by SoftMaker Software GmbH, a German company based in Nuremberg. It is typically used for creating and editing documents (TextMaker), spreadsheets (PlanMaker), and presentations on Windows, macOS, Linux, iOS, and Android. It focuses on strong compatibility with Microsoft Office formats and GDPR-compliant operation.