Alternatives to Microsoft Exchange Server for all platforms with any license

  • Google Apps icon

    Google Apps

    Google Apps is a service that provides independently customisable versions of several Google products under a custom domain name. It...

    Commercial Mac Windows Linux Web / Cloud Chrome OS

  • Kolab Community icon

    Kolab Community

    Kolab Groupware is a secure, scalable, reliable, flexible, full-featured collaboration suite.

    Open Source Linux Web / Cloud Self-Hosted

  • Zentyal icon

    Zentyal

    Zentyal is an email and groupware solution, natively compatible with Outlook, for those seeking a Microsoft Exchange alternative on...

    Open Source Linux

  • Kolab Now icon

    Kolab Now

    Kolab NOW provides a suite of intuitive apps in a user friendly environment to make your day to day online comms easier, smarter and...

    Commercial Mac Windows Linux Web / Cloud Android iPhone ... Windows RT Android Tablet Windows Phone iPad

  • Zimbra Collaboration Suite icon

    Zimbra Collaboration Suite

    Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web...

    Freemium Linux Web / Cloud

  • SOGo icon

    SOGo

    SOGo is groupware server with a focus on scalability and open standards. SOGo provides a rich AJAX-based Web interface and supports...

    Open Source Linux Web / Cloud Thunderbird

  • OX Open-Xchange icon

    OX Open-Xchange

    Open-Xchange Server 6 is the most advanced Linux based Groupware solution f. Open-Xchange Server 6 is superior in the following...

    Open Source Linux Web / Cloud

  • mailcow icon

    mailcow

    mailcow is a mail server suite based on Dovecot, Postfix and other open source software, that provides a modern Web UI for...

    Open Source Linux

  • hMail Server icon

    hMail Server

    hMailServer is a free e-mail server for Microsoft Windows. Its used by Internet service providers, companies, governments, schools and...

    Open Source Windows

  • iRedMail icon

    iRedMail

    A fully fledged, free email server solution, an open source project (GPL v2). Use official binary packages from Linux/BSD...

    Open Source Linux BSD Self-Hosted

  • Sendmail icon

    Sendmail

    Sendmail is a general purpose internetwork email routing facility that supports many kinds of transfer and delivery methods, including...

    Open Source Mac Linux

  • Zarafa icon

    Zarafa

    Open Source Collaboration, providing integration with your existing Linux mailserver, native mobile phone support, Outlook "Look...

    Commercial Mac Windows Linux Web / Cloud

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  • MDaemon Messaging Server icon

    MDaemon Messaging Server

    MDaemon Messaging Server software for Windows can be deployed in virtual, hosted cloud or private on-premise environments. It is used...

    Commercial Windows

  • Kerio Connect icon

    Kerio Connect

    Kerio Connect makes email, calendars, contacts and task management easy and affordable. With Kerio Connect, you have immediate, secure...

    Commercial Mac Windows Linux Web / Cloud

  • OpenChange icon

    OpenChange

    OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and Exchange protocols. Exchange is a...

    Open Source Linux

  • eGroupWare icon

    eGroupWare

    Egroupware is a web based software for team collaboration, central data management and CRM: email client, online calendar, contact and...

    Open Source Linux Web / Cloud

  • Atmail Email Server icon

    Atmail Email Server

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

    Commercial Linux Web / Cloud

  • OBM icon

    OBM

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

    Open Source Mac Windows Linux

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  • atmail icon

    atmail

    Atmail allows you to choose between on-premises or cloud deployment. Features include email, contact, calendar, task, storage...

    Commercial Mac Windows Linux Android iPhone Android Tablet ... iPad

  • PowerMTA icon

    PowerMTA

    Email gateway application (SMTP server) that makes it easy for senders to adopt the latest authentication specifications ( SPF and...

    Commercial Windows Linux Self-Hosted

  • Mercury Mail Transport System icon

    Mercury Mail Transport System

    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...

    Free Personal Windows

  • Expanding Communication icon

    Expanding Communication

    Turnkey Solutions for the Enterprise Cloud Installation, Configuration, and Management tools for enterprise email, collaboration...

    Commercial Linux

  • Xeams icon

    Xeams

    Xeams is a secure & powerful mail server for Windows, Linux, Solaris, MacOSX and other flavors or UNIX, which supports SMTP, POP3...

    Free Mac Windows Linux BSD

  • Citadel

    Is a collaboration suite (messaging and groupware). It is designed to run on open source operating systems such as Linux or BSD. In...

    Open Source Linux Web / Cloud

  • Blue-Mind icon

    Blue-Mind

    Blue Mind is a complete solution of company messaging, calendars and collaborative work. It aims to enable you to work daily with...

    Open Source Linux

  • Axigen icon

    Axigen

    Axigen is an integrated email, calendaring & collaboration platform, built on a unique Linux mail server technology, for increased...

    Freemium Windows Linux BSD Self-Hosted Microsoft Office Outlook

  • MailEnable icon

    MailEnable

    MailEnables mail server software provides a powerful, scalable hosted messaging platform for Microsoft Windows.

    Freemium Windows

  • HyperOffice Email Service icon

    HyperOffice Email Service

    HyperOffices is a Microsoft Exchange alternative with all the messaging features growing business need - custom business email;...

    Commercial Web / Cloud

  • SmarterMail Mail Server icon

    SmarterMail Mail Server

    SmarterMail delivers Exchange-level email server software features for a fraction of the cost. With lower hardware requirements...

    Freemium Windows

  • Mailsite icon

    Mailsite

    MailSite Email Servers provide high quality,easy to use email solutions for businesses, enterprises and service providers that require...

    Commercial Windows Web / Cloud Android iPhone Android Tablet

  • Alinto

    Established in January 2000, Alinto is one othe principal french editors and operators of collaborative messaging and unified...

    Commercial Web / Cloud

  • LeaderSend icon

    LeaderSend

    LeaderSend takes care of delivering your transactional messages and managing infrastructure, while you can focus on your business...

    Commercial Web / Cloud

  • Poste.io icon

    Poste.io

    Full featured solution for your Email server. Native implementation of last anti-SPAM metods, webmail and easy administration included.

    Free Personal Linux