Open Source Roundcube Alternatives

The best open source alternative to Roundcube is Rainloop. If that doesn't suit you, our users have ranked more than 25 alternatives to Roundcube and 19 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Roundcube are Mailpile, Kolab, SOGo and Mail-in-a-box.

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Alternatives list

  1. Squirrelmail icon

    Squirrelmail

     24 likes
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    SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in pure HTML 4.0 (with no JavaScript required) for maximum compatibility across browsers.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Self-Hosted
    • PHP
    Squirrelmail screenshot 1
     
  2. Postaci icon

    Postaci

     1 like
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    Postaci (Turkish for Postman) is multiplatform Webmail software which is database independent, multilanguage, POP3/IMAP, and fully MIME-compatible. While using POP3 mode to fetch messages it uses database fields to simulate IMAP folders, on which you can save, move, delete, and...

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Linux
     

  4. CacoCloud

     10 likes
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    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
     
  5. Nexmail icon

    Nexmail

     2 likes
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    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

    • Free
    • Open Source

    Application types

    Platforms

    • Self-Hosted
    • PHP
    Main Page
     
  6. NOCC icon

    NOCC

     4 likes
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    NOCC is a webmail client written in PHP. It provides webmail access to IMAP and POP3 accounts.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
    NOCC inbox view
     
  7. iRedMail icon

    iRedMail

     20 likes
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    A fully fledged, free email server solution, an open source project (GPL v2).

    Use official binary packages from Linux/BSD distributions, with both i386 and x86_64 support.

    Easy, fast deployment in LESS THAN 1 MINUTE. View YouTube Video to check how easy it is.

    Works on both no.

    66 iRedMail alternatives

    Cost / License

    • Freemium (Pay once)
    • Open Source

    Application type

    Platforms

    • Linux
    • BSD
    • Self-Hosted
    Main components and working process
     
  9. NeoMail icon

    NeoMail

     3 likes
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    NeoMail is a web-based mail client that allows users to access their mail spools and send messages. It does not require a POP3 server, or any shell access for the users. It interfaces directly with user mail spools.

    Cost / License

    • Free
    • Open Source

    Application types

    Alerts

    • Discontinued

    Platforms

    • Online
    NeoMail screenshot 1
     
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