Zimbra Collaboration Suite Alternatives

Zimbra Collaboration Suite is described as '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' and is a Mail Server in the office & productivity category. There are more than 25 alternatives to Zimbra Collaboration Suite for a variety of platforms, including Linux, Web-based, Windows, Self-Hosted and Mac apps. The best Zimbra Collaboration Suite alternative is Microsoft 365 Copilot, which is free. Other great apps like Zimbra Collaboration Suite are Roundcube, Google Workspace, Nextcloud Hub and mailcow: dockerized.

filter to find the best alternatives

Zimbra Collaboration Suite alternatives are mainly Mail Servers, but if you're looking for WebMail Providers or Calendar Apps you can filter on that. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Zimbra Collaboration Suite.
Zimbra Collaboration Suite iconZimbra Collaboration Suite
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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...

More about Zimbra Collaboration Suite
More about Zimbra Collaboration Suite
Zimbra Collaboration Suite alternatives page was last updated Feb 6, 2025
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  1. EGroupware icon

    EGroupware

     8 likes
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    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.

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Linux
    • Online
    • Self-Hosted
    • Software as a Service (SaaS)
    EGroupware on the desktop --- EGroupware offers with the modules - E-mail - Calendar - Address book - InfoLog (tasks, notes, ...) - File manager - Ticket system - Project Manager - Timesheet - Collabora Online Office - Rocket.Chat an entire office in the browser.

    EGroupware Features

    1.  Real time collaboration
    2.  Kanban Board
    3.  Document Sharing
    4.  Remote Work
    5.  Web-Based
    6.  CalDAV Support
    7.  RDP
    8.  WebDAV Support
    9.  CardDAV Support
    10.  Calendar Sync

    EGroupware VS Zimbra Collaboration Suite

     
  2. Postaci icon

    Postaci

     1 like
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    Postaci (Turkish for Postman) is multiplatform Webmail software which is database independent, multilanguage, POP3/IMAP, and fully MIME-compatible. While using POP3 mode to fetch messages it uses database fields to simulate IMAP folders, on which you can save, move, delete, and...

    License model

    • Free • Open Source

    Application type

    Platforms

    • Linux
    Discontinued

    Last commit on github : Jan 12, 2015. See https://github.com/Postaci-Webmail/Postaci

    Properties

    1.  Privacy focused

    Features

    1.  Ad-free
    2.  WYSIWYG Support
    3.  Spam Filter

    Postaci VS Zimbra Collaboration Suite

     
  4. Zarafa icon

    Zarafa

     13 likes
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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).

    License model

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    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."

    Zarafa Features

    1.  Real time collaboration

    Zarafa VS Zimbra Collaboration Suite

     
  5. Ad
    Screenshot
    Google Workspace icon
    Google Workspace

    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 cap...

    https://workspace.google.com
    Learn More
  6. Atmail Email Server icon

    Atmail Email Server

     7 likes
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    Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.

    License model

    Application types

    Country of Origin

    • AU flagAustralia

    Platforms

    • Linux
    • Online
    Intuitive Webmail Interface

    Atmail Email Server Features

    1.  Group Mail

    Atmail Email Server VS Zimbra Collaboration Suite

     
  7. Expanding Communication icon

    Expanding Communication

     5 likes
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    Turnkey Solutions for the Enterprise Cloud

    Installation, Configuration, and Management tools for enterprise email, collaboration, messaging, video conferencing, file sharing, and file transfers.

    License model

    Application types

    Platforms

    • Linux
    Expanding Communication screenshot 1

    Expanding Communication Features

    1.  Cloud Sync
    2.  Contacts
    3.  CalDAV Support
    4.  Cloud based
    5.  Video Conferencing
    6.  CardDAV Support

    Expanding Communication VS Zimbra Collaboration Suite

     
  8. iMail icon

    iMail

     3 likes
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    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.

    License model

    Application types

    Country of Origin

    • CN flagChina

    Platforms

    • Windows
    • Self-Hosted
    iMail Server LAN Client.

    iMail VS Zimbra Collaboration Suite

     
  10. atmail icon

    atmail

     1 like
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    Atmail provides services providers with email solutions.

    License model

    Application types

    Country of Origin

    • AU flagAustralia

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    atmail screenshot 1

    atmail Features

    1.  On-premises software

    atmail VS Zimbra Collaboration Suite

     

  11. Apache James

     1 like
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    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.

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Self-Hosted

    Apache James Features

    1.  JMAP
    2.  SMTP Support

    Apache James VS Zimbra Collaboration Suite

     
  12. Contactoffice icon

    Contactoffice

     6 likes
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    Virtual Office, Online Office, Digital Learning Space, Online Groupware - ContactOffice, Keep a virtual office on the web. Share documents, contacts, calendar, tasks, ... with clients, students, suppliers, friends or family.

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • BE flagBelgium
    • European Union flagEU

    Platforms

    • Online
    Home

    Contactoffice Features

    1.  SMS Messaging
    2.  CardDAV Support
    3.  Online collaboration
    4.  Web-Based
    5.  CalDAV Support
    6.  Contacts
    7.  WebDAV Support

    Contactoffice VS Zimbra Collaboration Suite

     
  13. Sanwhole Exchange icon

    Sanwhole Exchange

     1 like
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    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.

    License model

    Application type

    Country of Origin

    • CN flagChina

    Platforms

    • Windows
    iMail

    Sanwhole Exchange VS Zimbra Collaboration Suite

     
  14. iStrives icon

    iStrives

     1 like
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    The Front Door To Your Business – The only all-in-one system. Control every aspect of your business with our all-in-one performance management platform for your teams (employees, partners and suppliers).

    License model

    Application types

    Country of Origin

    • GB flagUnited Kingdom

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Software as a Service (SaaS)
    iStrives Mobile App: Project Management

    Top iStrives Features

    1.  Gamification
    2.  Task Time Tracking
    3.  Real time collaboration
    4.  Recurring Tasks
    5.  Multi-project management
    6.  Business Dashboards
    7.  Project Dashboard
    8.  Online collaboration
    9.  Real-time dashboard
    10.  Custom Dashboard
    11.  DMS

    iStrives VS Zimbra Collaboration Suite

     
  15. HyperOffice Email Service icon

    HyperOffice Email Service

     2 likes
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    HyperOffices is a Microsoft Exchange alternative with all the messaging features growing business need - custom business email; Outlook email; shared Outlook contacts, calendars and tasks; web and mobile email; Outlook synchronization; shared calendars, contacts, tasks and...

    License model

    Country of Origin

    • US flagUnited States

    Platforms

    • Online

    HyperOffice Email Service VS Zimbra Collaboration Suite

     
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