Roundcube AlternativesOnly apps categorised as Email Clients

The best Email Client alternative to Roundcube is Rainloop, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Roundcube and 16 are Email Clients so hopefully you can find a suitable replacement. Other interesting Email Client alternatives to Roundcube are Mailpile, Kolab, Horde and SnappyMail.

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Roundcube alternatives are mainly Email Clients, but if you're looking for WebMail Providers or Calendar Apps you can filter on that. Other popular filters include Self-Hosted and Open Source. These are just examples - use the filter bar below to find more specific alternatives to Roundcube.
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Alternatives
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Alternatives list

  1. Rainloop icon
     60 likes

    Simple, modern & fast web-based email client. Modest system requirements, decent performance, simple installation and upgrade, no database required. All these make RainLoop Webmail a perfect choice for your email solution.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Alerts

    • Discontinued

    Platforms

    • Online
    • Self-Hosted
    • Nextcloud
    • JavaScript
    • PHP
    • Cloudron
    Good alternative?
     
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    3
  2. Mailpile icon
     118 likes

    Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is funded by a large community of backers and all code related to the project is and will be released under an OSI approved Free Software license.

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Linux
    • Online
    • Self-Hosted
    • OpenPGP
    Good alternative?
     
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    3
  3. Kolab icon
     43 likes

    Kolab provides a FOSS communication & collaboration solution that can be completely self-hosted. Take back control of your data and access it via the webinterface, or existing mobile & desktop clients.

    Cost / License

    • Freemium
    • Open Source

    Application type

    Platforms

    • Linux
    • Online
    • Self-Hosted
    Good alternative?
     
  4. Horde icon
     30 likes

    Enterprise-level, browser-based suite for IMAP email, calendar, contacts, tasks, notes, wiki, and file management, offering syncing, shared and unlimited resources, multilingual support, customizable dashboard, and integration with mobile and external clients.

    42 Horde alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
    • Self-Hosted
    Good alternative?
     
  5. SnappyMail icon
     7 likes

    The drastically upgraded & secured fork of RainLoop Webmail Community edition.

    18 SnappyMail alternatives

    Cost / License

    Application type

    Alerts

    • Discontinued

    Platforms

    • Self-Hosted
    • UNIX Web Browser
    • Cloudron
    Good alternative?
     
  6. Cypht icon
     10 likes

    All your E-mail, from all your accounts, in one place. Cypht is like a news reader, but for E-mail. Cypht does not replace your existing accounts - it combines them into one. And it's also a news reader :).

    Cost / License

    Application type

    Platforms

    • Self-Hosted
    Good alternative?
     
  7. Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Linux
    • Online
    Good alternative?
     
  8. CrossBox icon
     1 like

    Real-time email, chat, audio/video calls & conferences, file-sharing, and contacts app with a modern and intuitive UI.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • BA flagBosnia & Herzegovina
    View Mailbox (Dark mode)
    Good alternative?
     
  9. Nexmail icon
     4 likes

    NexMail is an open-source, modern webmail client designed for self-hosted email servers. Enjoy a clean, intuitive interface with powerful features for managing your emails efficiently.

    31 Nexmail alternatives

    Cost / License

    Application type

    Platforms

    • Self-Hosted
    • PHP
    Good alternative?
     
  10.  10 likes

    A simple, fast and secure PHP/AngularJS based single user feed and mail reader, password and bookmark manager. CacoCloud is divided into a RESTful PHP backend storing all data into a SQLite database and an SPA frontend based on AngularJs.

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Self-Hosted
    • AngularJS
    Good alternative?
     
  11. Bulwark icon
     1 like

    JMAP Webmail built for the 21st Century. A modern, self-hosted email client for Stalwart Mail Server powered by the JMAP protocol. Email, calendar, contacts and files. Fast, private, and open source.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Self-Hosted
    • Docker
    Good alternative?
     
  12. Microservice based webmail client built with ReactJS and Spring.

    Minimalistic webmail client which currently has the main features of any other mail client (read mail, compose mail, organize mail folders...).

    Cost / License

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Self-Hosted
    • Kubernetes
    • Docker
    • OpenShift
    Good alternative?
     
12 of 16 Roundcube alternatives