OX App Suite AlternativesWebMail Providers & Mail Servers like OX App Suite

OX App Suite is described as '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' and is a webmail provider in the office & productivity category. There are more than 10 alternatives to OX App Suite for a variety of platforms, including Linux, Web-based, Self-Hosted, Windows and Mac apps. The best OX App Suite alternative is Roundcube, which is both free and Open Source. Other great apps like OX App Suite are Kolab Community, Zimbra Collaboration Suite, SOGo and Microsoft Exchange.

OX App Suite iconOX App Suite
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The OX App Suite by Open-Xchange is web-based platform offering a suite of apps like an email client, calendar, contacts...

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OX App Suite alternatives page was last updated Jun 16, 2025
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  1. Roundcube icon

    Roundcube

     168 likes
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    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.

    26 Roundcube alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • CH flagSwitzerland

    Platforms

    • Self-Hosted
    • PHP
    • Cloudron
    • Nextcloud
    Roundcube screenshot 1

    Roundcube Features

    1.  PGP Encryption
    2.  Dark Mode
    3.  WYSIWYG Support
    4. Docker icon  Support for Docker
    5. Nextcloud icon  Nextcloud integration
    6.  Hostable
    7.  IMAP Support

    Roundcube VS OX App Suite

     
    Comments about Roundcube as an Alternative to OX App Suite
    RemovedUser
    Dec 5, 2021
    0

    Roundcube covers only the email aspect. OX App Suite also offers full PIM, cloud storage and productivity apps.

    OX App Suite Icon
    Roundcube icon

    • Roundcube is the most popular Self-Hosted alternative to OX App Suite.

    • Roundcube is the most popular Open Source & free alternative to OX App Suite.

    • Roundcube is Free and Open SourceOX App Suite is also Free and Open Source
  2. Kolab Community icon

    Kolab Community

     41 likes
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    Kolab is entirely Free and Open Source Software (a.k.a. FOSS), and uses Open Standards. We’ll get to why this is important to us, and hope that it is important to you thereafter.

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • CH flagSwitzerland

    Platforms

    • Linux
    • Online
    • Self-Hosted

    Kolab Community Features

    1.  Real time collaboration
    2.  Video Conferencing
    3.  Contacts
    4.  Voice Chat
    5.  CardDAV Support
    6.  IMAP Support
    7.  CalDAV Support
    8.  WebDAV Support

    Kolab Community VS OX App Suite

     

    • Kolab Community is the most popular Web-based & Linux alternative to OX App Suite.

    • Kolab Community is Freemium and Open SourceOX App Suite is Free and Open Source
  4. Zimbra Collaboration Suite icon

    Zimbra Collaboration Suite

     35 likes
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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 dramatically reduces TCO compared to legacy platform vendors.

    44 Zimbra Collaboration Suite alternatives

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Linux
    • Online
    • Self-Hosted
    Zimbra Collaboration Suite screenshot 1

    Zimbra Collaboration Suite Features

    1.  Real time collaboration
    2.  ActiveSync
    3. Microsoft Active Directory icon  Active Directory integration

    Zimbra Collaboration Suite VS OX App Suite

     
  5. SOGo icon

    SOGo

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

    SOGo provides a rich AJAX-based Web interface and supports multiple native clients through the use of standard protocols such as CalDAV, CardDAV and GroupDAV.Share your calendars, address books and mails in.

    61 SOGo alternatives

    License model

    • Freemium • Open Source

    Application type

    Country of Origin

    • CA flagCanada

    Platforms

    • Linux
    • Online
    • Thunderbird
    • Cloudron
    SOGo screenshot 1
    SOGo screenshot 2
    SOGo screenshot 3

    SOGo Features

    1.  Support for Multiple Users
    2.  Scheduling
    3.  CalDAV Support
    4.  CardDAV Support

    SOGo VS OX App Suite

     
  6. Microsoft Exchange icon

    Microsoft Exchange

     17 likes
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    Exchange business-class email helps increase user productivity while protecting your data. Get it as a hosted service or run it on your servers.

    43 Microsoft Exchange alternatives

    License model

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Windows
    • Online
    • Self-Hosted
    • Microsoft Office 365
    Microsoft Exchange screenshot 1

    Microsoft Exchange Features

    1.  Real time collaboration

    Microsoft Exchange VS OX App Suite

     

    • Microsoft Exchange is the most popular Windows alternative to OX App Suite.

    • Microsoft Exchange is the most popular commercial alternative to OX App Suite.

    • Microsoft Exchange is Paid and ProprietaryOX App Suite is Free and Open Source
  7. Axigen icon

    Axigen

     13 likes
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    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).

    27 Axigen alternatives

    License model

    Application types

    Country of Origin

    • IT flagItaly
    • European Union flagEU

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Self-Hosted
    • Microsoft Office Outlook
    • Software as a Service (SaaS)
    Axigen screenshot 1

    Properties

    1.  Customizable

    Features

    1.  Real time collaboration
    2.  Shared Folders
    3.  Shared Calendar
    4.  Clustering
    5.  Customizable branding
    6.  CalDAV Support
    7.  Email Archiving
    8.  Clustering Support
    9.  Multiple languages
    10.  Delegated Administration

    Axigen VS OX App Suite

     

    • Axigen is the most popular Mac & SaaS alternative to OX App Suite.

    • Axigen is Paid and ProprietaryOX App Suite is Free and Open Source
  9. grommunio icon

    grommunio

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

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • iPad
    • Self-Hosted
    grommunio screenshot 1

    Properties

    1.  Privacy focused

    Features

    1.  Real time collaboration
    2.  Contacts
    3.  Self hosted mail
    4.  RPC
    5.  Ad-free
    6.  Dark Mode
    7.  Spam Filter
    8. Docker icon  Support for Docker
    9.  CardDAV Support
    10.  IMAP Support
    11.  CalDAV Support
    12.  POP3 Support

    grommunio VS OX App Suite

     

    • grommunio is the most popular Android, iPhone & iPad alternative to OX App Suite.

    • grommunio is Freemium and Open SourceOX App Suite is Free and Open Source
    • grommunio is Privacy focusedOX App Suite is not according to our users
  10. CrossBox icon

    CrossBox

     1 like
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    Real-time email, chat, audio/video calls & conferences, file-sharing, and contacts app with a modern and intuitive UI.

    License model

    Application types

    Country of Origin

    • BA flagBosnia & Herzegovina

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    View Mailbox (Dark mode)

    CrossBox Features

    1.  File Hosting

    CrossBox VS OX App Suite

     

    • CrossBox is the most popular Android Tablet alternative to OX App Suite.

    • CrossBox is Paid and ProprietaryOX App Suite is Free and Open Source

  11. Citadel

     7 likes
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    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...

    License model

    • Free • Open Source

    Application types

    Platforms

    • Linux
    • Online

    Citadel Features

    1.  Real time collaboration

    Citadel VS OX App Suite

     
  12. 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 OX App Suite

     
  13. 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 OX App Suite

     
  14. OBM icon

    OBM

     4 likes
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    OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices.

    License model

    • Free • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    OBM screenshot 1
    Discontinued

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

    OBM Features

    1.  Real time collaboration
    2.  CalDAV Support

    OBM VS OX App Suite

     
12 of 19 OX App Suite alternatives