Microsoft Exchange Server!

* * More * FAQ https://products.office.com/en-us/microsoft-office-for-home-and-school-faq
* System requirements https://products.office.com/en-us/office-system-requirements
* Install Office http://go.microsoft.com/fwlink/p/?LinkID
717124 * Templates http://go.microsoft.com/fwlink/p/?LinkID
506569 * For home https://products.office.com/en-us/compare-microsoft-office-products
* For business https://products.office.com/en-us/business/office
* For students https://products.office.com/en-us/student/office-in-education

Microsoft Exchange Server alternatives

  • Kopano

  • Kopano puts an email, video meetings, calendaring, and file sharing solution within one single interface.

    tags: archiving caldav cloud-hosting email-client email-management
  • Zentyal

  • Zentyal is a native Microsoft Active Directory® implementation on Linux incorporating all the network services required in a small and medium business environment: Directory & Domain Server, Mail Server, Gateway and Infrastructure Server.

    tags: linux-operating-systems groupware mail-server email-hosting web-interface
  • Kolab Community

  • 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.

    tags: activesync caldav carddav groupware imap
  • SOGo

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

    tags: caldav calendaring carddav groupdav groupware
  • hMail Server

  • hMailServer is a free e-mail server for Microsoft Windows. Its used by Internet service providers, companies, governments, schools and enthusiasts in all parts of the world.

    tags: imap mail-queue mail-server pop3 smtp
  • Kolab Now

  • Kolab Now, formerly MyKolab, is a fully featured secure collaboration and communication service that is easy to use on any device.

    tags: address-book caldav calendar carddav cloud-computing
  • Zimbra Collaboration Suite

  • 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.

    tags: calendar groupware mail-server
  • iRedMail

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

    tags: mail-server dkim spf
  • MDaemon Messaging Server

  • MDaemon Messaging Server software for Windows can be deployed in virtual, hosted cloud or private on-premise environments. It is used by businesses in over 90 countries and over 25 languages worldwide.

    tags: dropbox-integration email-encryption email-hosting encrypted-email group-chat
  • Zarafa

  • Open Source Collaboration, providing integration with your existing Linux mailserver, native mobile phone support, Outlook "Look & Feel" webaccess and stable Outlook sharing (100% MAPI).

    tags: calendar groupware mail-server
  • mailcow: dockerized

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

    tags: docker email-hosting email-management groupware mail-server
  • 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 areas:• Open-Xchange Server 6 offers most comprehensive Groupwarefunctionality based on modern user interface technologies and includesemail, calendaring, contact management, intelligent document sharing,“smart linking” and much more.• The architecture is designed for deployment in the hosted market.• The architecture is designed for enterprises market

    tags: calendar german groupware groupware-imap-ldap-calendar mail-server
  • Axigen

  • Axigen is a premium, all-in-one email, calendaring and collaboration platform, based on an innovative, proprietary technology, providing unmatched manageability for system administrators. Integrating all modules in a robust messaging solution, Axigen is developed for demanding users, from small businesses to large service providers.

    tags: api caldav calendaring carddav delegated-administration