The Best Open Source Microsoft 365 Copilot AlternativesTop Word Processors & Spreadsheet Apps like Microsoft 365 Copilot

The best open source alternative to Microsoft 365 Copilot is LibreOffice. If that doesn't suit you, our users have ranked more than 25 alternatives to Microsoft 365 Copilot and 15 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Microsoft 365 Copilot are ONLYOFFICE, Apache OpenOffice, CryptPad and Calligra Suite.

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Microsoft 365 Copilot alternatives are mainly Word Processors but may also be Spreadsheet Apps or Office Suites.  Other popular filters includes Android + Open Source and Windows + Free + Works Offline. Filter by these or use the filter bar below if you want a narrower list of alternatives or looking for a specific functionality of Microsoft 365 Copilot.
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Cloud-based productivity suite offering tools for document creation, collaboration, and AI-enhanced editing across various platforms and devices.

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Microsoft 365 Copilot alternatives page was last updated Jan 23, 2025
  1. LibreOffice icon
     2957 likes

    Comprehensive free office suite supporting word processing, advanced spreadsheets, dynamic presentations, vector drawings, math formulas, and robust database management. Fully compatible with major office formats across all operating systems, it offers extensive capabilities for personal or professional task...

    51 LibreOffice alternatives
    LibreOffice Writer on Linux

    License model

    • FreeOpen Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • BSD
    • Snapcraft
    • Flathub
    • PortableApps.com
    • F-Droid
    • Flatpak

    Top LibreOffice Features

    1. Microsoft 365 Copilot icon  Compatible with Microsoft Office
    2.  Ad-free
    3.  Works Offline
    4.  Print to PDF
    5. Microsoft Word icon  Export to Word
    6.  GNU/linux-libre
    7.  Multiple languages
    8.  Community-based
    9.  Built-in PDF converter
    10.  Export to PDF
    11. Microsoft 365 Copilot icon  Export to office formats
    12.  Multiplatform
    LibreOffice iconMicrosoft 365 Copilot Icon

    LibreOffice VS Microsoft 365 Copilot

    Is LibreOffice a good alternative to Microsoft 365 Copilot?
     
    Comments about LibreOffice as an Alternative to Microsoft 365 Copilot
     
       
    Comment summary: LibreOffice is widely praised for being a free, open-source alternative to Microsoft 365, offering compatibility with Microsoft file formats and a robust feature set. However, some users face UI/UX challenges and document formatting issues, especially with complex elements. While many appreciate its open-source nature and resource efficiency, others highlight its outdated interface and slower performance compared to Microsoft's suite.
    Nicolas

    It's free and also better for some situations : Calc is better than Excel for data interpretation and format !

    Top positive commentAug 19, 2020
    2
    wouf336

    Really bad UI and UX, no cloud save, no collaboration tools, use this of you wanna flashback to early 2010s

    Top negative commentDec 9, 2024
    1
    social-remodeler

    LibreOffice is free and open source and also brings in free document types which are not restricted by Microsoft.

    Libreoffice lacks in some point of support Microsoft only document styles but you can create fully functional documents shareable with any Microsoft office Suit.

    Positive commentOct 2, 2024
    0
    Show more comments
    3 of 58 comments
    Microsoft 365 Copilot Icon
    LibreOffice icon
    • Almost everyone thinks LibreOffice is a great Microsoft 365 Copilot alternative.

    • LibreOffice is the most popular Windows, Android, Mac & Linux alternative to Microsoft 365 Copilot.

    • LibreOffice is the most popular Open Source & free alternative to Microsoft 365 Copilot.

    • LibreOffice is Free and Open SourceMicrosoft 365 Copilot is Freemium and Proprietary
  2. ONLYOFFICE icon
     544 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.

    67 ONLYOFFICE alternatives
    ONLYOFFICE screenshot 1

    License model

    • Free PersonalOpen Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • AppImageHub
    • Snapcraft
    • Flathub
    • Software as a Service (SaaS)
    • Flatpak
    • Cloudron
    • HUAWEI AppGallery
    • Samsung Galaxy Store

    Top ONLYOFFICE Features

    1. Microsoft 365 Copilot icon  Compatible with Microsoft Office
    2.  Works Offline
    3.  Real time collaboration
    4.  Tabbed interface
    5. Nextcloud icon  Nextcloud integration
    6.  Team Collaboration
    7.  Export to PDF
    8.  Multiple languages
    9.  Ad-free
    10.  Dark Mode
    11.  Portable
    12.  Spell Checking
    ONLYOFFICE iconMicrosoft 365 Copilot Icon

    ONLYOFFICE VS Microsoft 365 Copilot

    Is ONLYOFFICE a good alternative to Microsoft 365 Copilot?
     
    Comments about ONLYOFFICE as an Alternative to Microsoft 365 Copilot
     
       
    Comment summary: ONLYOFFICE is widely praised as a free and open-source alternative to Microsoft 365 (Office), providing strong compatibility with Microsoft Office formats. Users appreciate its modern design, fast performance, and versatility across platforms, including Linux. While some note it lacks a few features, its user interface and formatting capabilities generally surpass those of LibreOffice.
    Jatan Mehta

    Doesn't mess up formatting like LibreOffice does.

    Top positive commentJan 4, 2019
    9
    social-remodeler

    It is not proprietary software.

    Positive commentOct 2, 2024
    0
    nguyenkhoi-luong-56

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

    Positive commentJun 27, 2024
    0
    Show more comments
    3 of 22 comments
    Microsoft 365 Copilot Icon
    ONLYOFFICE icon
    • Almost everyone thinks ONLYOFFICE is a great Microsoft 365 Copilot alternative.

    • ONLYOFFICE is the most popular Web-based, iPhone, iPad, SaaS, Android Tablet & Self-Hosted alternative to Microsoft 365 Copilot.

    • ONLYOFFICE is Free Personal and Open SourceMicrosoft 365 Copilot is Freemium and Proprietary
  3. Apache OpenOffice icon
     802 likes

    Apache OpenOffice is a leading open-source office suite that offers free applications for word processing, spreadsheet, presentations, graphics, databases and more. All data is stored in an open standard format, though Open Office can also read and write files from other common...

    57 Apache OpenOffice alternatives
    Apache OpenOffice screenshot 1

    License model

    • FreeOpen Source

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • PortableApps.com

    Apache OpenOffice Features

    1. Microsoft 365 Copilot icon  Compatible with Microsoft Office
    2.  Built-in PDF converter
    3.  Portable
    4.  Syntax Highlighting
    5.  Works Offline
    6.  Custom templates
    7.  Export to PDF
    Discontinued

    Last major release was in 2014

    Apache OpenOffice iconMicrosoft 365 Copilot Icon

    Apache OpenOffice VS Microsoft 365 Copilot

    Is Apache OpenOffice a good alternative to Microsoft 365 Copilot?
     
    Comments about Apache OpenOffice as an Alternative to Microsoft 365 Copilot
     
       
    Guest

    Free, no ads like many other "free" programs, and open source.

    Top positive commentNov 12, 2017
    10
    bchpls

    Don't use it! Apache OpenOffice is a dead project. For many years there's been no real serious updates to the project.

    Top negative commentNov 11, 2022
    6
    Anna Maria

    I've been using it for a few years and had no problems. Recommend it!

    Positive commentJul 31, 2022
    0
    Show more comments
    3 of 5 comments
    Microsoft 365 Copilot Icon
    Apache OpenOffice icon
    • Almost everyone thinks Apache OpenOffice is a great Microsoft 365 Copilot alternative.

    • Apache OpenOffice is Free and Open SourceMicrosoft 365 Copilot is Freemium and Proprietary
  4. CryptPad icon
     152 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.

    69 CryptPad alternatives
    Instance homepage

    License model

    • FreemiumOpen Source

    Platforms

    • Self-Hosted
    • Software as a Service (SaaS)

    Properties

    1.  Privacy focused

    Features

    1.  End-to-End Encryption
    2.  Real time collaboration
    3.  Collaborative writing
    4.  No registration required
    5.  Kanban Board
    6.  Encrypted Notes
    7.  Ad-free
    8.  No Tracking
    9.  Document Sharing
    10.  Direct file uploading
    11.  Cloud Sync
    12.  Support for MarkDown
    CryptPad iconMicrosoft 365 Copilot Icon

    CryptPad VS Microsoft 365 Copilot

    Is CryptPad a good alternative to Microsoft 365 Copilot?
     
    Comments about CryptPad as an Alternative to Microsoft 365 Copilot
     
    kaspian

    Great thing to selfhost, it uses E2EE

    Positive commentJan 30, 2023
    0
    Microsoft 365 Copilot Icon
    CryptPad icon
    • Almost everyone thinks CryptPad is a great Microsoft 365 Copilot alternative.

    • CryptPad is Freemium and Open SourceMicrosoft 365 Copilot is Freemium and Proprietary
    • CryptPad is Privacy focusedMicrosoft 365 Copilot is not according to our users
  5. Calligra Suite icon
     98 likes

    Calligra Suite is an office and graphic art suite by KDE. It is available for desktop PCs, tablet computers, and smartphones. It contains applications for word processing, spreadsheets, presentation, vector graphics, and editing databases.

    42 Calligra Suite alternatives
    Calligra Suite screenshot 1

    License model

    • FreeOpen Source

    Platforms

    • Linux
    • KDE
    • FreeBSD

    Properties

    1.  Privacy focused
    2.  Lightweight

    Features

    1.  KDE
    2.  Ad-free
    3.  Charts
    4.  Dark Mode
    5.  Works Offline
    6.  No registration required
    Calligra Suite iconMicrosoft 365 Copilot Icon

    Calligra Suite VS Microsoft 365 Copilot

    Is Calligra Suite a good alternative to Microsoft 365 Copilot?
     
  6. Collabora Office icon
     45 likes

    The enterprise-ready edition of LibreOffice provides you the powerful on-premise office suites, that enable you to access documents, author new content and work collaboratively. For Windows, macOS, Linux, Android, iOS and Chrome OS.

    42 Collabora Office alternatives
    Collabora Office screenshot 1

    License model

    • FreemiumOpen Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Self-Hosted
    • Software as a Service (SaaS)
    • Cloudron

    Top Collabora Office Features

    1.  Ad-free
    2.  Works Offline
    3.  Convert Excel to PDF document
    4.  Convert Word documents to PDF
    5.  No registration required
    6.  No Tracking
    7.  Dark Mode
    8.  Built-in PDF converter
    9.  Macro Recording
    10.  Support for 64 bit
    11.  Multiple languages
    Collabora Office iconMicrosoft 365 Copilot Icon

    Collabora Office VS Microsoft 365 Copilot

    Is Collabora Office a good alternative to Microsoft 365 Copilot?
     
  7. Collabora Online icon
     10 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.

    23 Collabora Online alternatives
    With live video collaboration. Using Talk in the right side bar.

    License model

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Self-Hosted
    • Software as a Service (SaaS)

    Properties

    1.  Privacy focused

    Features

    1.  Online collaboration
    2.  Multiple languages
    3.  Import CSV Data
    4.  Full-Text Search
    5.  WYSIWYG Support
    6.  Ad-free
    7.  Real time collaboration
    8.  Spell Checking
    9.  Dark Mode
    10.  Web-Based
    11.  Online editor
    12.  Cloud based
    Collabora Online iconMicrosoft 365 Copilot Icon

    Collabora Online VS Microsoft 365 Copilot

    Is Collabora Online a good alternative to Microsoft 365 Copilot?
     
7 of 15 Microsoft 365 Copilot alternatives