Open Source Zimbra Collaboration Suite AlternativesMail Servers & Calendar Apps like Zimbra Collaboration Suite

The best open source alternative to Zimbra Collaboration Suite is Roundcube. If that doesn't suit you, our users have ranked more than 25 alternatives to Zimbra Collaboration Suite and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Zimbra Collaboration Suite are mailcow: dockerized, Nextcloud Hub, Kolab and OX App Suite.

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Zimbra Collaboration Suite alternatives page was last updated

Alternatives list

  1. Roundcube icon
     172 likes

    Roundcube webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an e-mail client, including MIME support, address book, folder manipulation, message searching and spell checking.

    27 Roundcube alternatives

    Cost / License

    Platforms

    • Self-Hosted
    • PHP
    • Cloudron
    • Nextcloud
     
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    1
    Roundcube vs Zimbra Collaboration Suite Comments
    Guest
    Negative
    25

    Roudcube is only web mail client not groupware solution like Zimbra

    Review by a new / low-activity user.
    • Roundcube is Free and Open SourceZimbra Collaboration Suite is Paid and Proprietary
  2. 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

    Platforms

    • Linux
    • Self-Hosted
     
  3. Nextcloud Hub icon
     22 likes

    Nextcloud is the most deployed on-premises file share and collaboration platform. Access & collaborate across your devices. As fully on-premises solution, Nextcloud Hub provides the benefits of online collaboration without the compliance and security risks.

    54 Nextcloud Hub alternatives

    Cost / License

    • Free
    • Open Source

    Platforms

    • Self-Hosted
    • Nextcloud
     
  4. Kolab icon
     43 likes

    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.

    Cost / License

    • Freemium
    • Open Source

    Application type

    Platforms

    • Linux
    • Online
    • Self-Hosted
     
  5. OX App Suite icon
     16 likes

    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

    Platforms

    • Linux
    • Online
    • Self-Hosted
    • Software as a Service (SaaS)
     
  6. Kolab Now icon
     43 likes

    Kolab Now provides a suite of intuitive apps in a user friendly environment to make your day to day online comms easier, smarter and most importantly; secure.

    Cost / License

    • Paid
    • Open Source

    Platforms

    • Online
    • Software as a Service (SaaS)
    • DAVx5
     
  7. Carbonio icon
     Like

    Carbonio Community Edition (Carbonio CE) is a free and open-source (FOSS) email and collaboration platform designed by Zextras. It is a complete email solution, allowing organizations to maintain digital sovereignty through on-premises self-hosted servers, ensuring privacy and...

    7 Carbonio alternatives

    Cost / License

    Platforms

    • Online
     
  8. grommunio icon
     3 likes

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

    Cost / License

    • Freemium
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • iPad
    • Self-Hosted
     
  9. Horde icon
     30 likes

    Horde Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts, tasks and notes with the standards compliant components from the Horde Project.

    41 Horde alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Online
    • Self-Hosted
     
  10. Blue-Mind icon
     10 likes

    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.

    Cost / License

    • Paid
    • Open Source

    Platforms

    • Linux
     
  11.  8 likes

    Is a collaboration suite (messaging and groupware). It is designed to run on open source operating systems such as Linux or BSD. In order to modernize the Citadel platform for the Internet, the Citadel/UX developers added functionality such as shared calendars, instant...

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    • Online
     
  12. iRedMail icon
     20 likes

    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
    • Open Source

    Application type

    Platforms

    • Linux
    • BSD
    • Self-Hosted
     
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