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    OBM Alternatives

    OBM is described as 'free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices' and is a Mail Server in the office & productivity category. There are more than 10 alternatives to OBM for a variety of platforms, including Online / Web-based, Linux, Self-Hosted solutions, Windows and SaaS. The best alternative is Microsoft 365. It's not free, so if you're looking for a free alternative, you could try Zimbra Collaboration Suite or SOGo. Other great apps like OBM are Horde, Nextcloud Hub, Kolab Community and Kolab Now.

    OBM is mainly a Mail Server but alternatives to it may also be WebMail Providers or Calendar Apps. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of OBM.
    This page was last updated May 23, 2022
    OBM
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    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    More
    OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support...
    Learn more about OBM

    1. Microsoft 365 is a subscription-based software services that licenses Microsoft Office products for on-premise or cloud-based use.
    2. 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.


      • FreemiumOpen Source
      • Linux
      • Online
      • Thunderbird
      • Cloudron
      More
      SOGo is groupware server with a focus on scalability and open standards.
      • FreeOpen Source
      • Online
      • Self-Hosted
      More
      Horde Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts, tasks and notes with the standards compliant components from the Horde Project.
    3. Nextcloud is the most deployed on-premises file share and collaboration platform. Access & collaborate across your devices. As fully on-premises solution, Nextcloud Hub provides the benefits of online collaboration without the compliance and security risks.
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    4. 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.
      No screenshots yet
    5. Kolab Now provides a suite of intuitive apps in a user friendly environment to make your day to day online comms easier, smarter and most importantly; secure.
      • FreemiumOpen Source
      • Linux
      • BSD
      • Self-Hosted
      More
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      A fully fledged, free email server solution, an open source project (GPL v2).
      • FreeOpen Source
      • Linux
      More
      OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and Exchange protocols.
      No screenshots yet
    6. Blue Mind is a complete solution of company messaging, calendars and collaborative work. It aims to enable you to work daily with comprehensive, useful, efficient and effective tools.
    Showing 10 of 22 alternatives