Free Microsoft Exchange Server Alternatives

    The best free alternative to Microsoft Exchange Server is Kopano, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Microsoft Exchange Server and 19 is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Microsoft Exchange Server are hMail Server (Free, Open Source), mailcow: dockerized (Free, Open Source), Zimbra Collaboration Suite (Freemium, Open Source) and Kolab Community (Freemium, Open Source).

    The list of alternatives was last updated Jun 14, 2021

    Platforms

    • Linux
    • Online
    • Windows
    • Self-Hosted
    • Mac
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Software as a Service (SaaS)
    • BSD
    • Microsoft Office Outlook
    • S/MIME
    • Thunderbird
    • DAVdroid
    • Cloudron
    • Java
    • Windows Phone
    • Chrome OS

    Features

    • Email Server
    • Real time collaboration
    • Calendar
    • CalDAV
    • POP3 Support
    • SMTP
    • CardDAV
    • File sharing
    • Mobile Device Management
    • Chat
    • ActiveSync
    • Support for Docker
    • Shared calendars
    • Team Collaboration
    • Support for WebDAV
    • Contacts
    • On-premises software
    • Support for IMAP
    • Group Mail
    • Live Chat

    License

    × Clear
    • Free
    • Open Source
    • Paid
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    Showing 10 of 19 alternatives