Self-Hosted EU Alternatives: How to Easily Host LibreOffice & Co. with lowcloud

If you want to break free from Microsoft 365 or Google Workspace, you're in a good position today. The open-source productivity stack has matured. The real challenge is no longer the software itself — it's the operations. This article covers which EU-compliant self-hosted alternatives exist and how to run them productively without infrastructure overhead.

Why Self-Hosted EU Alternatives Make Sense Again

After the Schrems II ruling by the CJEU in 2020, there was a brief moment of panic — then most companies just carried on as before. That was understandable, because alternatives were still clunkier back then. That has changed.

US cloud services fall under the Cloud Act, which fundamentally grants US authorities access to stored data — even when servers are located in Europe. This is no longer a theoretical risk but a concrete compliance problem for companies handling personal data or sensitive business information.

On top of that, the political uncertainty around transatlantic data agreements persists. Investing in sovereign IT infrastructure now is a strategic decision, not a reactive one.

Self-hosting doesn't necessarily mean running your own server room. It means retaining control over your data and software. What infrastructure it runs on is a separate question.

Key Self-Hosted EU Alternatives at a Glance

The market for open-source productivity software has matured significantly in recent years. For most use cases, there are robust alternatives ready for production use.

LibreOffice — The Classic, Reimagined

Most people know LibreOffice as a desktop application. What many don't realize: there are server-based variants that enable collaborative work directly in the browser.

Collabora Online is the commercially supported, enterprise-grade version of LibreOffice as a web editor. It integrates directly with Nextcloud and offers real-time collaboration on documents, spreadsheets, and presentations — functionally comparable to Google Docs, but on your own infrastructure.

ONLYOFFICE is another server-based office solution with a similar feature set. ONLYOFFICE sometimes offers better compatibility with Microsoft Office formats, which can matter for mixed teams.

Both solutions run as container applications and integrate well with existing platforms.

Nextcloud — More Than Just File Storage

Nextcloud is the backbone of many self-hosted setups. The platform started as a Dropbox alternative but has evolved into a full collaboration platform.

Key features for enterprise use:

• File sync and sharing with access controls
• Integration with Collabora Online or ONLYOFFICE for browser-based document editing
• Calendar, contacts, and tasks (CalDAV/CardDAV compatible)
• Video calls via Nextcloud Talk
• User management with LDAP/AD integration

Nextcloud runs as a PHP application, requires a database (MySQL/PostgreSQL), and needs object storage for production environments. Running it on Kubernetes is possible but requires configuration effort, especially around persistent storage and session handling.

More Tools: Jitsi, Mailcow, Gitea

A complete self-hosted stack goes beyond office tools:

• Jitsi Meet for video conferencing — open source, no account required, GDPR-compliant when self-hosted
• Mailcow or Stalwart as a full email server solution with web interface
• Gitea or Forgejo as self-hosted alternatives to GitHub. Ideal for teams that don't want their code on US services

Each of these solutions runs containerized and can be deployed in modern Kubernetes environments.

The Real Problem with Self-Hosting

The software isn't the problem. Operations is.

Running Nextcloud or Collabora yourself requires:

• A Kubernetes or Docker environment with sufficient resources
• Persistent storage that survives restarts
• TLS certificates with automatic renewal
• Regular backups that actually work
• Update processes that don't cause downtime
• Monitoring and alerting

This is manageable if someone on the team knows these topics and has time. In many small and medium-sized businesses, neither is consistently guaranteed. And that's exactly where the dilemma arises: self-hosting sounds like control but quickly becomes a maintenance burden.

Running Self-Hosted EU Alternatives with lowcloud

lowcloud is a Kubernetes DaaS platform that runs on EU infrastructure and simplifies the operation of open-source applications. Instead of setting up and maintaining your own Kubernetes environment, you use a managed platform that handles the infrastructure layer.

For the self-hosted scenario, this means:

• Deployment of Nextcloud, Collabora Online, or ONLYOFFICE via standardized Helm charts or container images
• Persistent storage through the platform, without needing to configure your own storage classes
• TLS and ingress provided by the platform
• Backups included as part of the platform
• EU data center — data never leaves Europe

The difference from a VPS where you configure everything yourself: you get a platform layer that abstracts Kubernetes complexity while preserving full container flexibility.

For teams that want to run open-source applications in production without building in-house Kubernetes expertise, this is a pragmatic path.

Self-Hosting on Your Own Infrastructure vs. lowcloud vs. US SaaS

Compliance Benefits: What Changes Legally

Running open-source tools on EU infrastructure gives you clear advantages over US SaaS providers:

No third-country transfer. Data stored on servers in Germany or the EU, operated by an EU company, is not subject to third-country data transfers under GDPR. Standard contractual clauses or adequacy decisions — which can be invalidated at any time — are not a concern.

Clear data processing agreements. With an EU platform provider, a data processing agreement under Art. 28 GDPR can be concluded straightforwardly, without legal uncertainties.

No Cloud Act risk. US authorities cannot compel the handover of data on EU infrastructure from EU providers — at least not through the US Cloud Act. The EU's Cloud Sovereignty Framework now provides a formal standard for verifying these protections.

This doesn't mean that self-hosting is automatically GDPR-compliant. Technical and organizational measures (TOMs) still need to be implemented and documented. But the structural compliance risks that come with US services are eliminated.

lowcloud as the Foundation for Your EU Stack

Self-hosting with open-source software is no longer a workaround. LibreOffice-based web editors, Nextcloud, and the surrounding tools are production-ready. The question is no longer whether, but how to run them.

If you don't want to maintain infrastructure yourself but also don't want to move to a US hyperscaler, lowcloud offers a third path: a Kubernetes DaaS platform on EU infrastructure that simplifies running open-source applications without giving up control over your data and software.

If you're planning to get started or want to put an existing self-hosted environment on a more stable foundation, take a look at lowcloud.