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    CrossBox Alternatives

    CrossBox is described as 'Email With a modern and intuitive interface Chat Real-time Text, Audio & Video chat with file sharing File storage With a document previewer File sharing File and document sharing within the company, privately, or publicly Contacts Personal and company-wide' 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 Google Workspace (Paid), Zoho (Paid), mailcow: dockerized (Free, Open Source) and Microsoft 365 (Paid).

    This page was last updated Oct 25, 2021

    1. IceWarp integrates all communication & collaboration features in one unified solution. Available in cloud or for on-premises deployment, IceWarp is a great tool to share and exchange all information and ideas online, offline or via mobile devices.
    2. Kerio Connect makes email, calendars, contacts and task management easy and affordable. With Kerio Connect, you have immediate, secure access to your communications anytime, anywhere, on any device - without complexity or expensive overhead.

      • Windows
      • Self-Hosted
      Fast, safe, heavy mail solution. Web-client access, LAN or WAN self-hosted server, maintenance-free design. No Windows server and database server required, unlimited mail accounts, storage, attachment size, custom logo. Free for commercial use.
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    3. Sanwhole Exchange is a server running iMail, iPress and iStore services. iMail is an enterprise-class email server does Microsoft Exchange and Gmail work. iPress sets blog, forums and tickets in one. iStore is an online store.
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    4. Zendo is a platform that lets businesses handle customer requests in one place. Zendo helps sell bespoke services online; saves time by reducing context switching, manual and repetitive tasks, or managing customer communications.
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    5. Online Collaboration with Chat and Online Office. Is developed as open source software in Germany, offered as free community version and as commercial version. Operation as self-hosted or as SaaS from the computer centre.
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    6. Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.
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    7. Open Source Collaboration, providing integration with your existing Linux mailserver, native mobile phone support, Outlook "Look & Feel" webaccess and stable Outlook sharing (100% MAPI).


      "Last year we released the announcement that Zarafa customers could transition to Kopano. We also announced that Zarafa would not be maintained beyond May 1st, 2017. Most ZCP customers have moved to a Kopano subscription now."

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    8. Full featured email server built in docker with free plan.
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    9. Turnkey Solutions for the Enterprise Cloud Installation, Configuration, and Management tools for enterprise email, collaboration, messaging, video conferencing, file sharing, and file transfers.
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