More and more organizations are looking for a Nextcloud Microsoft 365 alternative that meets their requirements in terms of privacy, costs and control over their own data. The demand is understandable: Microsoft has increased licensing fees three times in recent years, and the debate over data sovereignty and GDPR compliance is more topical than ever. But what can Nextcloud really do, and what do organizations encounter in practice? In this article we provide an honest, functional overview, without sales pitch.
What is Nextcloud and how does it compare to Microsoft 365?
Nextcloud is an open-source storage, collaboration and communication platform that you host yourself, on your own server or with a hosting provider. With the release of Nextcloud Hub 10 (early 2026), the platform is more mature than ever, with AI capabilities via the Nextcloud Assistant 3.0 that can perform actions across multiple apps.
The platform consists of four core modules that can be directly compared to Microsoft 365 components:
- Nextcloud Files for storage and synchronization (similar to OneDrive)
- Nextcloud Office for co-editing documents (similar to Microsoft 365 Online)
- Nextcloud Talk for chat and video calling (similar to Teams)
- Nextcloud Groupware for calendar and contacts (similar to Outlook)
What Nextcloud does well as a Microsoft 365 alternative
Full control over your data
This is the strongest argument for Nextcloud as a Microsoft 365 alternative. At Nextcloud you decide where your data is located, who can access it and under which legislation it falls. This is not an afterthought for organizations in the public sector, healthcare or legal services. It’s also why the German state of Schleswig-Holstein is migrating 25,000 government computers from Microsoft to a combination of LibreOffice and Nextcloud, and Denmark is considering similar steps.
Solid file management and document editing
Nextcloud works well for sharing and editing documents together. The integration with Collabora Online, the open-source counterpart of Office Online, is stable and supports common formats. For most everyday tasks like writing documents, maintaining spreadsheets, and sharing presentations, Word or Excel won’t fall short.
Significantly lower licensing costs
Microsoft 365 Business Premium currently costs $22 per user per month, excluding Copilot licenses ($30 additional per user per month). Nextcloud has no license costs per user: you only pay for infrastructure and management. For organizations with internal IT capacity, this can make a significant difference with larger numbers of users.
Open platform, freely expandable
Hundreds of integrations are available via the app store, from project management to e-signatures. Because the source code is open, custom adjustments are possible, something that is not possible with Microsoft 365 outside the frameworks of Power Platform and Graph API.
Where the boundaries of Nextcloud lie
Here it becomes fairer, and also more relevant for those seriously considering migrating from Microsoft 365 to Nextcloud.
Video calling for larger groups: Talk falls short
Nextcloud Talk works fine for chat and small video connections, but as soon as you call more than five people at the same time, you notice the limitations. Talk uses a peer-to-peer connection model that becomes unstable in larger groups. Microsoft Teams is simply better here, both in scalability and in the integration with calendar, files and meeting minutes. Anyone who uses Teams intensively should take this into account.
Management takes time and expertise
Nextcloud is not a SaaS service that you turn on and forget. You are responsible for updates, backups, security, availability and scalability. This requires either internal knowledge or a managed hosting solution through a partner. The apparently low costs per user are quickly neutralized by the management burden, especially if you also want to properly set up high availability, disaster recovery and end-to-end encryption.
App quality varies
The Nextcloud marketplace contains apps of varying quality. Some are well maintained, others falter or cause conflicts after an update. With Microsoft 365 you don’t have this problem: everything works together because it comes from one supplier. That is a closed ecosystem, but also a predictable one.
Power Platform, Intune and advanced compliance are missing
If your organization is deeply intertwined with the Microsoft stack such as Intune for device management, Power Automate for process automation, Purview for compliance or Defender for security, Nextcloud does not offer a direct replacement. You are then more likely to build a parallel environment than to fully migrate.
For whom is Nextcloud as a Microsoft 365 alternative the right choice?
Nextcloud fits well with organizations that:
- Have strict requirements for data location or data sovereignty (government, healthcare, legal, education)
- Want to reduce licensing costs and have internal or external IT capacity for management
- Primarily store, share and edit files together, without heavy reliance on Teams or Power Platform
- Choosing a hybrid approach: Nextcloud alongside, not necessarily replacing, Microsoft 365
It is less suitable for organizations that:
- Use teams intensively for large video meetings and meeting integrations
- Not having internal IT that can manage and monitor the platform
- Rely heavily on Microsoft-specific tools such as Power Platform, Intune or Defender
Conclusion: Nextcloud is a serious alternative, but not a simple replacement
Nextcloud is a mature, serious platform that can be an excellent Microsoft 365 alternative for many organizations, or at least a valuable addition. But it’s not a plug-and-play replacement. The choice depends on your management capacity, your dependence on Microsoft-specific features and how much data sovereignty matters to you.
Are you considering the switch or do you want to know what is realistic in your situation? Contact us and we will look through it together.