Roundcube AlternativesOnly Self-Hosted apps categorised as Email Clients

There are many alternatives to Roundcube as a self-hosted solution if you are looking for a replacement. The best Self-Hosted Email Client alternative 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 nine of them are Email Clients available as a self-hosted solution so hopefully you can find a suitable replacement. Other interesting Self-Hosted Email Client alternatives to Roundcube are Mailpile, Kolab, SnappyMail and Cypht.

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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 Open Source and Self-Hosted. These are just examples - use the filter bar below to find more specific alternatives to Roundcube.
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Alternatives list

  1. Rainloop icon

    Rainloop

     59 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.

    13 Rainloop alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application types

    Alerts

    • Discontinued

    Platforms

    • Online
    • Self-Hosted
    • Nextcloud
    • JavaScript
    • PHP
    • Cloudron
    Login
     
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    3
    Rainloop vs Roundcube Comments
    mandrael
    Positive
    1

    It's popular, modern programmed, faster than roundcube, but not so feature rich. Much sits below the surface though.

    Guest
    Positive
    3

    PHP based and customizable more than roundcube, more modern ui

    Review by a new / low-activity user.
    EgorSharin
    Negative
    1

    The old version (no longer maintained since 2022) is still open-source on GitHub. The new version is closed-source.

    • Rainloop is Free and Open SourceRoundcube is also Free and Open Source
  2. Mailpile icon

    Mailpile

     117 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.

    60 Mailpile alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Alerts

    • Discontinued

    Platforms

    • Linux
    • Online
    • Self-Hosted
    • OpenPGP
    Mailpile screenshot 1
     
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    3
    Mailpile vs Roundcube Comments
    Guest
    Negative
    0

    Mailpie is a descktop application but Roundcube is a selfhosted application.

    Review by a new / low-activity user.
    Guest
    Negative
    1

    Mailpile needs to run on a computer

    Review by a new / low-activity user.
    Guest
    Negative
    -1

    Mailpile is single-user (personal) environment

    Review by a new / low-activity user.
    • Mailpile is Free and Open SourceRoundcube is also Free and Open Source
  4. Kolab icon

    Kolab

     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.

    48 Kolab alternatives

    Cost / License

    • Freemium
    • Open Source

    Application type

    Platforms

    • Linux
    • Online
    • Self-Hosted
     
  6. Cypht icon

    Cypht

     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
    Cypht screenshot 1
     
  7. CrossBox icon

    CrossBox

     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 types

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    View Mailbox (Dark mode)
     
  9. Nexmail icon

    Nexmail

     3 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.

    Cost / License

    Application types

    Platforms

    • Self-Hosted
    • PHP
    Main Page
     
  10. Isotope Mail Client icon

    Isotope Mail Client

     1 like

    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...).

    12 Isotope Mail Client alternatives

    Cost / License

    Application types

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Self-Hosted
    • Kubernetes
    • Docker
    • OpenShift
    Inbox with some read e-mails
     
  11. C

    CacoCloud

     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 types

    Alerts

    • Discontinued

    Platforms

    • Self-Hosted
    • AngularJS
    Feed reader
     
9 of 9 Roundcube alternatives