Open Source Self-Hosted Microsoft 365 Copilot Alternatives

Microsoft 365 Copilot is not available as a self-hosted solution but there are some alternatives for power users and business that want to host a solution on-premise. The best open source Self-Hosted alternative is ONLYOFFICE. If that doesn't suit you, our users have ranked more than 50 alternatives to Microsoft 365 Copilot and six of them are open source and available as a self-hosted solution so hopefully you can find a suitable replacement. Other interesting open source Self-Hosted alternatives to Microsoft 365 Copilot are CryptPad, ZetaOffice, Collabora Online and Kolab.

filter to find the best alternatives

Microsoft 365 Copilot alternatives are mainly Office Suites, but if you're looking for Spreadsheet Apps or Word Processors you can filter on that. Other popular filters include Paid, Android + Open Source, Windows + Free, Word Processing, Linux, Open Source and Self-Hosted. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Microsoft 365 Copilot.
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Alternatives list

  1. ONLYOFFICE icon

    ONLYOFFICE

     669 likes

    Open-source office suite offering document, spreadsheet, and presentation editing with co-editing modes, plugin support, integration across 30+ services, robust security, and mobile access. Available in Community, Enterprise, and Home Server editions for versatile deployment.

    83 ONLYOFFICE alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • HUAWEI AppGallery
    • iPad
    • Self-Hosted
    • AppImageHub
    • Snapcraft
    • Flathub
    • Samsung Galaxy Store
    • Software as a Service (SaaS)
    • Flatpak
    • Cloudron
    ONLYOFFICE screenshot 1
     
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    22
    ONLYOFFICE vs Microsoft 365 Copilot Comments
    Top Positive Comment
    Jatan Mehta
    11

    Doesn't mess up formatting like LibreOffice does.

    social-remodeler
    Positive
    0

    It is not proprietary software.

    nguyenkhoi-luong-56
    Positive
    1

    It's free and open source software. Compatible with most Microsoft Office documents. Doesn't track you at all.

    3 of 22 comments
    • ONLYOFFICE is Free and Open SourceMicrosoft 365 Copilot is Freemium and Proprietary
    • ONLYOFFICE is Privacy focusedMicrosoft 365 Copilot is not according to our users
  2. CryptPad icon

    CryptPad

     186 likes

    CryptPad is a private-by-design alternative to popular office tools and cloud services. All the content stored on CryptPad is encrypted before being sent, which means nobody can access your data unless you give them the keys.

    93 CryptPad alternatives

    Cost / License

    Application types

    Platforms

    • Software as a Service (SaaS)
    • Self-Hosted
    • Cloudron
    Instance homepage
     
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    2
    CryptPad vs Microsoft 365 Copilot Comments
    Shaz Shah
    Positive
    0

    I like Cryptpad as an alternative to M365, where it allows you to self-host your own office suite, which looks like an instance of OnlyOffice hosted in the "cloud" while respecting E2EE and is open source. If you'd rather use the cloud than self-host you can use a public instance or a paid plan for hosting and storage.

    kaspian
    Positive
    0

    Great thing to selfhost, it uses E2EE

    • CryptPad is Freemium and Open SourceMicrosoft 365 Copilot is Freemium and Proprietary
    • CryptPad is Privacy focused and LightweightMicrosoft 365 Copilot is not according to our users
  4. ZetaOffice icon

    ZetaOffice

     8 likes

    Experience LibreOffice in your browser with ZetaOffice, featuring device access, self-hosting or CDN deployment, API for tailored integration, and data control. Enjoy a comprehensive suite with Writer for formatting, Calc for data analysis, and Impress for presentations, optimized for performance.

    Cost / License

    • Free
    • Open Source (MIT)

    Application types

    Platforms

    • Windows
    • Linux
    • Online
    • Self-Hosted
    • Flathub
    • Flatpak
    ZetaOffice screenshot 1
     
  5. Ad
    Screenshot
    ONLYOFFICE icon
    ONLYOFFICE

    Open-source office suite offering document, spreadsheet, and presentation editing with co-editing modes, plugin support, integration across 30+ services, robust security, and mobile access. Available in Community, Enterprise, and...

    https://www.onlyoffice.com
    Learn More
  6. Collabora Online icon

    Collabora Online

     13 likes

    Collabora Online is a powerful LibreOffice-based online office suite with collaborative editing, which supports all major document, spreadsheet and presentation file formats and works in all modern browsers.

    Cost / License

    • Paid
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Self-Hosted
    • Software as a Service (SaaS)
    • Cloudron
    With live video collaboration. Using Talk in the right side bar.
     
  7. Kolab icon

    Kolab

     43 likes

    Kolab provides a FOSS communication & collaboration solution that can be completely self-hosted. Take back control of your data and access it via the webinterface, or existing mobile & desktop clients.

    Cost / License

    • Freemium
    • Open Source

    Application type

    Platforms

    • Linux
    • Online
    • Self-Hosted
     
  8. Open365 icon

    Open365

     30 likes

    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!.

    39 Open365 alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Alerts

    • Discontinued

    Platforms

    • Android
    • Self-Hosted
    Open365 screenshot 1
     
6 of 6 Microsoft 365 Copilot alternatives