Alternatives to SIGAINT for all platforms with any license





Web / Online


Other Platforms

  • ProtonMail icon


    Secure email with absolutely no compromises, brought to you by MIT and CERN scientists. Swiss Based ProtonMail is incorporated in...

    Open Source Web / Cloud Android iPhone iPad

  • Tutanota icon


    Tutanota is a free and open source web-mail client that focuses on privacy. There's also an Android and an iOS app. All data is...

    Open Source Web / Cloud Android iPhone iPad

  • Enigmail icon


    Enigmail is a security extension to Mozilla Thunderbird and SeaMonkey. It enables you to...

    Open Source Mac Windows Linux Thunderbird SeaMonkey

  • Inky icon


    End-to-End Encrypted Email that is a Delight to Use, on all devices, with all email accounts.

    Commercial Mac Windows Android iPhone Android Tablet iPad

  • OnionMail icon


    OnionMail is an anonymous and encrypted mail server made to run on the TOR network without losing the ability to communicate with the...

    Free Mac Windows Linux Web / Cloud Android iPhone

  • AnonyMail icon


    AnonyMail is an anonymous and privacy-centered email client that can be accessed from both the clearnet and as a Tor hidden service.

    Free Web / Cloud

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