Microsoft Exchange Alternatives for Linux

Microsoft Exchange is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best Linux alternative is Google Workspace. It's not free, so if you're looking for a free alternative, you could try mailcow: dockerized or Kolab. If that doesn't suit you, our users have ranked more than 25 alternatives to Microsoft Exchange and many of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Microsoft Exchange are Infomaniak kSuite, Zimbra Collaboration Suite, Zentyal and grommunio.

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Alternatives list

  1. Google Workspace icon

    Google Workspace

     145 likes
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    Google Workspace delivers a cloud-based suite combining Gmail, Calendar, Meet & Drive to enhance collaboration through tools like Docs and Sheets. Offers secure storage options, custom domain emails, and robust management capabilities with 2FA and 24/7 support.

    53 Google Workspace alternatives

    Cost / License

    • Subscription
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Chrome OS
    Google Workspace screenshot 1
     
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    • Some users think Google Workspace is a great Microsoft Exchange alternative, some don't.

    • Google Workspace is the most popular Web-based, Windows, Mac & Linux alternative to Microsoft Exchange.

    • Google Workspace is the most popular commercial alternative to Microsoft Exchange.

    • Google Workspace is Paid and ProprietaryMicrosoft Exchange is also Paid and Proprietary
  2. mailcow: dockerized icon

    mailcow: dockerized

     45 likes
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    mailcow is a mail server suite based on Dovecot, Postfix, SOGo, Rspamd and other open source software, that provides a modern Web UI for administration.

    23 mailcow: dockerized alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Linux
    • Self-Hosted
    mailcow: dockerized screenshot 1
     

    • mailcow: dockerized is the most popular Self-Hosted alternative to Microsoft Exchange.

    • mailcow: dockerized is the most popular Open Source & free alternative to Microsoft Exchange.

    • mailcow: dockerized is Free and Open SourceMicrosoft Exchange is Paid and Proprietary
  4. Kolab icon

    Kolab

     43 likes
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    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.

    47 Kolab alternatives

    Cost / License

    • Freemium (Subscription)
    • Open Source

    Application type

    Platforms

    • Linux
    • Online
    • Self-Hosted
     
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  5. Ad
    Screenshot
    Infomaniak kSuite icon
    Infomaniak kSuite

    Suite for secure email, calendaring, file sharing, chat, and online meetings, offering real-time collaboration on docs, GDPR compliance, customizable branding, renewable energy use, advanced user management, and all data hosted i...

    https://www.infomaniak.com
    Learn More
  6. Infomaniak kSuite icon

    Infomaniak kSuite

     9 likes
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    Suite for secure email, calendaring, file sharing, chat, and online meetings, offering real-time collaboration on docs, GDPR compliance, customizable branding, renewable energy use, advanced user management, and all data hosted in Switzerland.

    77 Infomaniak kSuite alternatives

    Cost / License

    • Free Personal
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    Infomaniak kSuite screenshot 1
     

    • Infomaniak kSuite is the most popular Android & iPhone alternative to Microsoft Exchange.

    • Infomaniak kSuite is Free Personal and ProprietaryMicrosoft Exchange is Paid and Proprietary
    • Infomaniak kSuite is Privacy focused and LightweightMicrosoft Exchange is not according to our users
  7. Zimbra Collaboration Suite icon

    Zimbra Collaboration Suite

     35 likes
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    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.

    45 Zimbra Collaboration Suite alternatives

    Cost / License

    • Pay once
    • Proprietary

    Application types

    Platforms

    • Linux
    • Online
    • Self-Hosted
    Zimbra Collaboration Suite screenshot 1
     
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  8. Zentyal icon

    Zentyal

     55 likes
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    Integrates native Active Directory and all essential network services, including domain, mail, gateway, infrastructure, and security roles, for SMBs, offering web-based management, centralized authentication, file server, VPN, and firewall in a single Linux platform.

    26 Zentyal alternatives

    Cost / License

    • Pay once
    • Open Source

    Application type

    Platforms

    • Linux
    Dashboard
     
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    16
    Comments about Zentyal as an Alternative to Microsoft Exchange
    Guest
    Negative
    7

    No Exchange alternative and no support for MS Outlook Client

    Review by a new / low-activity user.
    Guest
    Negative
    0

    Not an Exchange alternative at all. Does basic AD but that is about it. It is more of a gateway server.

    Review by a new / low-activity user.
    Guest
    Negative
    -2

    They do not share any common functionality. Zentyal is an Active Directory substitute, Microsoft Exchange is a groupware E-Mail (enterprise grade) server.

    Review by a new / low-activity user.
    Show more comments
    3 of 4 comments
    Microsoft Exchange Icon
    Zentyal icon

    • Some users think Zentyal is a great Microsoft Exchange alternative, some don't.

    • Zentyal is Paid and Open SourceMicrosoft Exchange is Paid and Proprietary
  10. grommunio icon

    grommunio

     3 likes
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    grommunio (formerly known as grammm) efficiently combines all requirements of modern, digital communication and collaboration.

    15 grommunio alternatives

    Cost / License

    • Freemium (Subscription)
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • iPad
    • Self-Hosted
    grommunio screenshot 1
     
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    9
    Comments about grommunio as an Alternative to Microsoft Exchange
    Guest
    Positive
    0

    Great Activesync Support POOR and I mean VERY Poor Calendar that has a mind of It's own, setting events or reminders is a NIGHTMARE

    Review by a new / low-activity user.
    norbertlambing
    Positive
    2

    As the first open source solution to offer a full-featured OutlookAnywhere (RPC over HTTP) and MAPI/HTTP implementation, grammm is the alternative to proprietary backends for native interoperability with Microsoft Outlook

    Microsoft Exchange Icon
    grommunio icon

    • Almost everyone thinks grommunio is a great Microsoft Exchange alternative.

    • grommunio is the most popular iPad alternative to Microsoft Exchange.

    • grommunio is Freemium and Open SourceMicrosoft Exchange is Paid and Proprietary
    • grommunio is Privacy focusedMicrosoft Exchange is not according to our users
  11. SOGo icon

    SOGo

     30 likes
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    SOGo is groupware server with a focus on scalability and open standards.

    SOGo provides a rich AJAX-based Web interface and supports multiple native clients through the use of standard protocols such as CalDAV, CardDAV and GroupDAV.Share your calendars, address books and mails in.

    61 SOGo alternatives

    Cost / License

    • Freemium (Subscription)
    • Open Source

    Application type

    Platforms

    • Linux
    • Online
    • Thunderbird
    • Cloudron
    SOGo screenshot 1
    SOGo screenshot 2
    SOGo screenshot 3
     
  12. Axigen icon

    Axigen

     14 likes
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    Axigen provides a multi-tenant, fully integrated, multi-platform, all-in-one email, calendaring and collaboration messaging solution. It grants extensive branding options and is localized in over 29 languages (including right-to-left writing mode).

    Cost / License

    • Pay once
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Self-Hosted
    • Microsoft Office Outlook
    • Software as a Service (SaaS)
    Axigen screenshot 1
     
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    Comments about Axigen as an Alternative to Microsoft Exchange
    Menoetius
    Positive
    0

    Axigen is so much easier to use, it has the on-premise solution, and has unbeatable prices!

    Review by a new / low-activity user.
    Microsoft Exchange Icon
    Axigen icon
    • Axigen is Paid and ProprietaryMicrosoft Exchange is also Paid and Proprietary
    • Axigen is CustomizableMicrosoft Exchange is not according to our users
  13. OX App Suite icon

    OX App Suite

     15 likes
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    The OX App Suite by Open-Xchange is web-based platform offering a suite of apps like an email client, calendar, contacts magement, cloud storage with synchronization and productivity apps for word processing, spreadsheets and presentations.

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Linux
    • Online
    • Self-Hosted
    • Software as a Service (SaaS)
    OX Portal
     
  14. SmarterMail Mail Server icon

    SmarterMail Mail Server

     4 likes
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    SmarterMail is the only other email server on the market with native support for MAPI, the protocol that powers Exchange and Outlook. That means anything you can do on Exchange you can do with SmarterMail: no plug-ins and no additional software required.

    Cost / License

    • Pay once
    • Proprietary

    Application types

    Platforms

    • Windows
    • Linux
    • Docker
    Audio and video conferencing for your team. Includes screen sharing, unlimited chat attendees, file sharing with previews, public or private conferences, and much more.
     
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    Comments about SmarterMail Mail Server as an Alternative to Microsoft Exchange
    Tim Uzzanti
    Positive
    0

    Offers native MAPI integration, along with EWS and EAS. Works great with Outlook, but also other clients like the MacOS client, eM Client, and others. No CALs, like for on-prem Exchange.

    Microsoft Exchange Icon
    SmarterMail Mail Server icon
    • SmarterMail Mail Server is Paid and ProprietaryMicrosoft Exchange is also Paid and Proprietary
    • SmarterMail Mail Server is Privacy focused and LightweightMicrosoft Exchange is not according to our users
  15. iRedMail icon

    iRedMail

     20 likes
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    A fully fledged, free email server solution, an open source project (GPL v2).

    Use official binary packages from Linux/BSD distributions, with both i386 and x86_64 support.

    Easy, fast deployment in LESS THAN 1 MINUTE. View YouTube Video to check how easy it is.

    Works on both no.

    66 iRedMail alternatives

    Cost / License

    • Freemium (Pay once)
    • Open Source

    Application type

    Platforms

    • Linux
    • BSD
    • Self-Hosted
    Main components and working process
     
12 of 26 Microsoft Exchange alternatives