Self-Hosted Microsoft 365 Alternatives
Microsoft 365 is not available as a self-hosted solution but there are plenty of alternatives for power users and business that want to host a solution on-premise. The best Self-Hosted alternative is Nextcloud, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Microsoft 365 and 19 are available as a self-hosted solution so hopefully you can find a suitable replacement. Other interesting Self-Hosted alternatives to Microsoft 365 are ONLYOFFICE, Twake, Zimbra Collaboration Suite and WikiSuite.
Microsoft 365 alternatives are mainly Office Suites but may also be Word Processors or Spreadsheet Apps. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Microsoft 365.
- Freemium • Open Source
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- F-Droid
- Cloudron
You should have full control over your data. We help you achieve that: a safe home for all your data. Secure, under your control and developed in an open, transparent and trustworthy way. We are Nextcloud.
Nextcloud vs Microsoft 365 opinions
altenativetoHas a convincing onlyoffice integration. +Better data protection. Feels like 2 Years behind office but works very well in the Browser.
DreadfuldarkThis is a totally different product. It is not an office suite.
Only comparable to one tool or service of O365.
- Free Personal • Open Source
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- Software as a Service (SaaS)
- Cloudron
ONLYOFFICE is an open-source online collaborative office combining editors for documents, spreadsheets, presentations, and forms. It is compatible with all popular formats and features maximum support for MS Office files.
ONLYOFFICE vs Microsoft 365 opinions
altenativetoProbably better team functions and good integration in an environment with higher data protection standards.
Very goodcompatibility with officeXML files
- Freemium • Open Source
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Twake is a real-time teamwork platform. It is a suite of collaborative tools that includes the specificities of some bestsellers (Slack, Trello, Google Drive...).
- Freemium • Open Source
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- Self-Hosted
Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application available today, Zimbra boosts the productivity of users on any desktop and dramatically reduces TCO compared to legacy platform vendors.
WikiSuite™ is especially suited to knowledge-centric organizations and offers most (80%+) of the data and information management features all organizations need.
No screenshots yet
- Freemium • Open Source
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Kolab is entirely Free and Open Source Software (a.k.a. FOSS), and uses Open Standards. We’ll get to why this is important to us, and hope that it is important to you thereafter.
No screenshots yet
- Free • Open Source
- Self-Hosted
Nextcloud is the most deployed on-premises file share and collaboration platform. Access & collaborate across your devices. As fully on-premises solution, Nextcloud Hub provides the benefits of online collaboration without the compliance and security risks.
No screenshots yet
- Freemium • Open Source
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- Microsoft Office Outlook
- S/MIME
- Software as a Service (SaaS)
Kopano puts an email, video meetings, calendaring, and file sharing solution within one single interface.
The open source cloud with LibreOffice online - LibreOffice online + Seafile + KDE. Improve your productivity and communicate better with your team members. The world is moving forward. Welcome to the open source cloud!.
Discontinued
The project seems to be no longer developed. Last commit on the GitHub repo was made on June 27th, 2016, but it can be still downloaded and installed.
- Freemium • Open Source
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grommunio (formerly known as grammm) efficiently combines all requirements of modern, digital communication and collaboration.
