Alternatives to Rainloop for all platforms with any license



Web / Online


  • Mailpile icon


    Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is funded...

    Open Source Mac Windows Linux Web / Cloud Self-Hosted

  • Roundcube icon


    Roundcube webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality...

    Open Source Self-Hosted PHP

  • Squirrelmail icon


    SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP...

    Open Source Self-Hosted PHP

  • Horde icon


    Horde Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts, tasks...

    Open Source Web / Cloud

  • Modoboa icon


    Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface . It provides useful components...

    Open Source Linux Self-Hosted

  • Atmail Email Server icon

    Atmail Email Server

    Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows. ...

    Commercial Linux Web / Cloud

  • Cypht

    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...

    Open Source Self-Hosted

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