Software Alternatives & Reviews


Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.

Zimbra is the trusted email and collaboration platform and productivity suite that includes contacts, calendar, tasks, chat and file sharing, plus videoconferencing, document editing, and file storage. Built on an open source core, it features a modern interface, pre-integrations with popular third-party apps like Zoom, Slack and Dropbox, and can be deployed in the cloud or in on-prem and hybrid environments. Enterprises, governments, financial institutions, service providers and remote teams around the world rely on Zimbra to support complex privacy, data sovereignty and security requirements. Today, Zimbra powers hundreds of millions of mailboxes on desktop and mobile devices in more than 140 countries, and is offered by more than 500 BSPs and 2,000 channel partners. Also available now for small and medium-sized business is Zimbra Cloud, starting at $2.95 per month for 30 GB of storage. Visit to learn more and begin a free trial.


Zimbra Alternatives

The best Zimbra alternatives based on verified products, community votes, reviews and other factors.
Latest update:

  1. 93

    A fully fledged, free email server solution, an open source project (GPL v2).

  2. 82

    Web-based IMAP email client

  3. 71

    Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft.

  4. 52

    An open source mailserver suite.

  5. 52

    Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!

  6. 38

    Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail.

  7. 44

    Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.

  8. 51

    hMailServer is a free e-mail server for Microsoft Windows.

  9. 40

    Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software and also includes contacts and calendar synchronization.

  10. 35

    Horde Groupware is a free, enterprise ready, browser based collaboration suite.

  11. 35

    Google's encompassing suite of cloud-based business apps.

  12. 35

    SOGo is groupware server with a focus on scalability and open standards.

  13. 31

    Mailbird is the best email client for Windows 7, 8 and 10

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Zimbra Reviews

External sources with reviews and comparisons of Zimbra

15 Best iRedMail Alternatives 2021
Zimbra has a calendar feature like iRedMail with a simple web and mobile UI that lets you manage your calendars and address books. Similarly, it also supports POP, IMAP, CardDAV, and CalDAV protocols.
Top 10 Webmail Clients in 2021
Zimbra Zimbra also works in web browsers. But it isn’t like PHP web clients as it uses the AJAX set of web technologies instead. It offers email and calendar functionality and you can view messages and conversation formats. Its approach to visual search is particularly effective in making short work of managing the largest...
5 open source webmail clients for browser-based email
Zimbra is a well-maintained project that has been hosted at a number of different corporate entities through the years, and was acquired by Synacore in 2016. It features most of the things you've come to expect in a modern webmail client, from webmail to folders to contact lists to a number of pluggable extensions, and...
Best Open Source Collaboration & Groupware Software Solutions
Zimbra Collaboration Suite (ZCS) is a collaborative software suite that includes an email server, a web client, calendar, chat, and many other tools. It is a groupware application that has gained a lot of popularity due to the features it provides in an OpenSource way. There are two versions, a Community Edition (Opensource...
Read all Zimbra reviews → Read all Zimbra reviews →

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Author of Zimbra's details: | Publisher: SaaSHub
Categories: Email, Email Client, Calendar