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    Microsoft Exchange Server Alternatives

    Microsoft Exchange Server is described as 'messaging and collaborative software product developed by Microsoft. It is part of the Microsoft Servers line of server products and is widely used by enterprises using Microsoft infrastructure solutions' and is a Mail Server in the Social & Communications category. There are more than 25 alternatives to Microsoft Exchange Server for a variety of platforms, including Linux, Online / Web-based, Windows, Self-Hosted solutions and Mac. The best alternative is Kopano, which is both free and Open Source. Other great apps like Microsoft Exchange Server are Google Workspace (Paid), hMail Server (Free, Open Source), Zentyal (Paid, Open Source) and mailcow: dockerized (Free, Open Source).

    This page was last updated Jun 17, 2021
    • Windows
    • Online
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    Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft. It is part of the...
    Learn more about Microsoft Exchange Server

      • FreemiumOpen Source
      • Linux
      • BSD
      • Self-Hosted
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      A fully fledged, free email server solution, an open source project (GPL v2).
      • FreeOpen Source
      • Linux
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      OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and Exchange protocols.
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    1. Blue Mind is a complete solution of company messaging, calendars and collaborative work. It aims to enable you to work daily with comprehensive, useful, efficient and effective tools.
    2. 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.
    3. grommunio (formerly known as grammm) efficiently combines all requirements of modern, digital communication and collaboration.
      grommunio 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 11 months ago

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    4. 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).
      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 almost 5 years ago

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      • Mac
      • Windows
      • Linux
      • Online
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      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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    5. 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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      • FreeOpen Source
      • Mac
      • Linux
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      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.
    6. MailEnables mail server software provides a powerful, scalable hosted messaging platform for Microsoft Windows.
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    Showing 20 of 43 alternatives