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    CrossBox Alternatives

    CrossBox is described as 'Real-time email, chat, audio/video calls & conferences, file-sharing, and contacts app with a modern and intuitive UI' and is a Mail Server in the Office & Productivity category. There are more than 25 alternatives to CrossBox for a variety of platforms, including Linux, Online / Web-based, Windows, Self-Hosted solutions and Mac. Most alternatives are Mail Servers and WebMail Providers. The best alternative is Roundcube, which is both free and Open Source. Other great apps like CrossBox are Zoho (Paid), Google Workspace (Paid), mailcow: dockerized (Free, Open Source) and Microsoft 365 (Paid).

    This page was last updated Oct 25, 2021
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    Real-time email, chat, audio/video calls & conferences, file-sharing, and contacts app with a modern and intuitive UI.
    Learn more about CrossBox

    1. 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.
    2. Zoho is an all-in-one online office suite. Zoho gears itself towards businesses, increasing your productivity and offering easy, real-time collaboration.


    3. Google Workspace (formerly Google Apps for Work / G Suite) is Google's encompassing selection of cloud apps for business, including customizable products under custom domain names.
    4. mailcow is a mail server suite based on Dovecot, Postfix, SOGo, Rspamd and other open source software, that provides a modern Web UI for administration.
    5. Microsoft 365 is a subscription-based software services that licenses Microsoft Office products for on-premise or cloud-based use.


    6. 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.
      • FreeOpen Source
      • Online
      • Self-Hosted
      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.
    7. 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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    8. 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
      • FreemiumOpen Source
      • Mac
      • Windows
      • Linux
      • Online
      • Android
      • iPhone
      • Android Tablet
      • Windows Phone
      • iPad
      • Self-Hosted
      • Microsoft Office Outlook
      • S/MIME
      • Software as a Service (SaaS)
      Kopano puts an email, video meetings, calendaring, and file sharing solution within one single interface.
    Showing 10 of 41 alternatives