Web-based Roundcube Alternatives

Roundcube is not available as a web app but there are plenty of alternatives that runs in the browser with similar functionality. The best Online 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 17 are available as a web app so hopefully you can find a suitable replacement. Other interesting Online alternatives to Roundcube are Mailpile, Horde, Kolab and SOGo.

filter to find the best alternatives

Roundcube alternatives are mainly WebMail Providers, but if you're looking for Email Clients or Mail Servers 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.
Copy a direct link to this comment to your clipboard
Roundcube alternatives page was last updated

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.

    13 Rainloop alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Alerts

    • Discontinued

    Platforms

    • Online
    • Self-Hosted
    • Nextcloud
    • JavaScript
    • PHP
    • Cloudron
     
    |
    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

    Alerts

    • Discontinued

    Platforms

    • Linux
    • Online
    • Self-Hosted
    • OpenPGP
     
    |
    3
  3. 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.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Online
    • Self-Hosted
     
  4. 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
     
  5. SOGo icon
     31 likes

    SOGo is groupware server with a focus on scalability and open standards.

    SOGo provides a rich AJAX-based Web interface and supports multiple native clients through the use of standard protocols such as CalDAV, CardDAV and GroupDAV.Share your calendars, address books and mails in.

    Cost / License

    Application type

    Platforms

    • Linux
    • Online
    • Thunderbird
    • Cloudron
     
  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.

    46 Zimbra Collaboration Suite alternatives

    Cost / License

    • Paid
    • Proprietary

    Application types

    Platforms

    • Linux
    • Online
    • Self-Hosted
     
  7. OX App Suite icon
     16 likes

    The OX App Suite by Open-Xchange is web-based platform offering a suite of apps like an email client, calendar, contacts magement, cloud storage with synchronization and productivity apps for word processing, spreadsheets and presentations.

    20 OX App Suite alternatives

    Cost / License

    • Free
    • Open Source

    Platforms

    • Linux
    • Online
    • Self-Hosted
    • Software as a Service (SaaS)
     
  8. Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.

    Cost / License

    • Paid
    • Proprietary

    Platforms

    • Linux
    • Online
     
  9. 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

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
     
  10. Webmail Lite icon
     18 likes

    Open Source WebMail Lite is a free community edition of full-featured WebMail Pro server application intended for users who need a clean and simple web mail application, which is fast and easy to use. Whether you need a free web browser based email client software for Windows ASP.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
    • Self-Hosted
     
  11.  8 likes

    Self-hosted server for the Proton Mail client.

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Online
    • Self-Hosted
     
  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

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Self-Hosted
    • Kubernetes
    • Docker
    • OpenShift
     
12 of 17 Roundcube alternatives