Microsoft Exchange Server Alternatives for Linux

    Microsoft Exchange Server 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 Kopano or mailcow: dockerized. If that doesn't suit you, our users have ranked more than 25 alternatives to Microsoft Exchange Server and many of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Microsoft Exchange Server are Zentyal (Paid, Open Source), Zimbra Collaboration Suite (Freemium, Open Source), Kolab Community (Freemium, Open Source) and SOGo (Freemium, Open Source).

    This page was last updated Jun 17, 2021

    1. 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).
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      Axigen vs Microsoft Exchange Server opinions
      pros, cons and recent comments
      Menoetius Axigen is so much easier to use, it has the on-premise solution, and has unbeatable prices!
      Positive comment about 4 years ago

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    2. Is a collaboration suite (messaging and groupware). It is designed to run on open source operating systems such as Linux or BSD.
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    3. Open-Xchange Server 6 is the most advanced Linux based Groupware solution f.
    4. Open Source Collaboration, providing integration with your existing Linux mailserver, native mobile phone support, Outlook "Look & Feel" webaccess and stable Outlook sharing (100% MAPI).

      Discontinued

      "Last year we released the announcement that Zarafa customers could transition to Kopano. We also announced that Zarafa would not be maintained beyond May 1st, 2017. Most ZCP customers have moved to a Kopano subscription now."

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      • FreeOpen Source
      • Mac
      • Linux
      Sendmail is a general purpose internetwork email routing facility that supports many kinds of transfer and delivery methods, including the Simple Mail Transfer Protocol (SMTP) used for email transport over the Internet.
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    5. OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and Exchange protocols.
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    6. grammm efficiently combines all requirements of modern, digital communication and collaboration.
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      grammm vs Microsoft Exchange Server opinions
      pros, cons and recent comments
      norbertlambing 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
      Positive comment about 2 months ago

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    7. Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.
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    8. Online Collaboration with Chat and Online Office. Is developed as open source software in Germany, offered as free community version and as commercial version. Operation as self-hosted or as SaaS from the computer centre.
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    9. Full featured email server built in docker with free plan.
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    Showing 20 of 28 alternatives