OpenChange Alternatives

    OpenChange is described as 'aims to provide a portable Open Source implementation of Microsoft Exchange Server and Exchange protocols' and is an app in the Online Services category. There are more than 25 alternatives to OpenChange for a variety of platforms, including Windows, Linux, Online / Web-based, Mac and Self-Hosted solutions. The best alternative is Zoho. It's not free, so if you're looking for a free alternative, you could try Zimbra Collaboration Suite or hMail Server. Other great apps like OpenChange are Microsoft 365 (Paid), iRedMail (Freemium, Open Source), Kopano (Freemium, Open Source) and Nextcloud Hub (Free, Open Source).

    This page was last updated Jun 14, 2021

    1. IceWarp integrates all communication & collaboration features in one unified solution. Available in cloud or for on-premises deployment, IceWarp is a great tool to share and exchange all information and ideas online, offline or via mobile devices.
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • Self-Hosted
      James stands for Java Apache Mail Enterprise Server! It has a modular architecture based on a rich set of modern and efficient components which provides at the end complete, stable, secure and extendable Mail Servers running on the JVM.
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    2. The Mercury Mail Transport System is a mail server that sends and receives messages on behalf of a group of users on a machine or local area network. Messages from the outside world are received by Mercury and delivered to the users, who can access it at any later point.
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      • Windows
      • Self-Hosted
      Fast, safe, heavy mail solution. Web-client access, LAN or WAN self-hosted server, maintenance-free design. No Windows server and database server required, unlimited mail accounts, storage, attachment size, custom logo. Free for commercial use.
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    3. Sanwhole Exchange is a server running iMail, iPress and iStore services. iMail is an enterprise-class email server does Microsoft Exchange and Gmail work. iPress sets blog, forums and tickets in one. iStore is an online store.
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    4. grammm efficiently combines all requirements of modern, digital communication and collaboration.
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    5. 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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    6. Full featured email server built in docker with free plan.
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    7. OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices.

      Discontinued

      The GitHub repository has been archived and the last update was in 2017.

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    8. Turnkey Solutions for the Enterprise Cloud Installation, Configuration, and Management tools for enterprise email, collaboration, messaging, video conferencing, file sharing, and file transfers.
    Showing 20 of 29 alternatives