Alternatives to SIGAINT for all platforms with any license

Platforms

Desktop

Mobile

Tablet

Web / Online

Browsers

Other Platforms

  • ProtonMail icon

    ProtonMail

    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

    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

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

    Open Source Mac Windows Linux Thunderbird SeaMonkey

  • Inky icon

    Inky

    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

  • AnonyMail icon

    AnonyMail

    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

  • OnionMail icon

    OnionMail

    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

  • Invmail icon

    Invmail

    Secure, zero-knowledge, end-to-end communications platform, offering facilities such as e-mail, video/voice calling, and a messaging...

    Free Personal Web / Cloud

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