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OneTime Alternatives

OneTime is described as 'open source encryption program that uses the one-time pad algorithm to allow two parties to communicate privately. It has features to assist with the bureaucracy of pad management, and comes with built-in help. OneTime requires Python 2' and is an app in the security & privacy category. There are more than 25 alternatives to OneTime for a variety of platforms, including Windows, Mac, Linux, GnuPG and Android. The best alternative is TrueCrypt, which is both free and Open Source. Other great apps like OneTime are GnuPG, GPG4Win, Enigmail and Kleopatra.

OneTime alternatives are mainly Disk Encryption Tools but may also be Password Managers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of OneTime.
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OneTime iconOneTime
  2
  • FreeOpen Source
  • Mac
  • Windows
  • Linux

OneTime is an open source encryption program that uses the one-time pad algorithm to allow two parties to communicate...

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  1. TrueCrypt icon

    TrueCrypt

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    [TrueCrypt is not exactly "Open Source", but the source is available. See the reviews to get more information.]

    ⚫︎ PortableTrueCrypt can be used from a USB stick or similar with no prior installation.
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    Discontinued

    Currently unmaintained. Last version, TrueCrypt 7.1a, is still available for download and development has continued via the forks VeraCrypt icon VeraCrypt and CipherShed icon CipherShed. "The development of TrueCrypt was ended in 5/2014 after Microsoft terminated support of Windows XP. Windows 8/7/Vista and later offer integrated support for encrypted disks and virtual disk images."

    Main TrueCrypt Window
  2. GnuPG icon

    GnuPG

    • FreeOpen Source
    • Mac
    • Linux
    • PortableApps.com
    • Xfce
    • OpenPGP

    GnuPG allows to encrypt and sign your data and communication, features a versatile key management system as well as access modules for all kinds of public key directories. GnuPG, also known as GPG, is a command line tool with features for easy integration with other applications.

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    GnuPG Shell running GnuPG on Windows


  3. GPG4Win icon

    GPG4Win

    • FreeOpen Source
    • Windows
    • Microsoft Office Outlook
    • S/MIME
    • GnuPG

    Gpg4win enables users to securely transport emails and files with the help of encryption and digital signatures. Encryption protects the contents against an unwanted party reading it. Digital signatures make sure that it was not modified and comes from a specific sender.

    ⚫︎ Windows Explorer ExtensionGPG4Win can extend Windows Explorer in various ways, for example add context menu options, etc..
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    Screenshot
  4. Enigmail icon

    Enigmail

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • GnuPG
    • Thunderbird
    • SeaMonkey

    Enigmail is a security extension to Mozilla Thunderbird and SeaMonkey. It enables you to write and receive email messages signed and/or encrypted with the .

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    Thunderbird window with Decrypt button
  5. Kleopatra icon

    Kleopatra

    • FreeOpen Source
    • Windows
    • Linux
    • GnuPG

    It supports managing X.509 and OpenPGP certificates in the GpgSM keybox and retrieving certificates from LDAP servers.

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    Screenshot


  6. AES Crypt icon

    AES Crypt

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad

    AES Crypt is an advanced file encryption utility that integrates with the Windows shell or runs from the Linux command prompt to provide a simple, yet powerful, tool for encrypting files using the Advanced Encryption Standard (AES).

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    Screenshot
  7. Encrypto icon

    Encrypto

    • FreeProprietary
    • Mac
    • Windows

    Encrypto lets you encrypt files before sending them to friends or coworkers. Just drop a file into Encrypto, set a password, and then send it however you normally would — but this time with added security. It’s free for both Mac and Windows.

    ⚫︎ PDF encryptionEncrypto can encrypt and decrypt PDF documents.
    ⚫︎ LightweightEncrypto consumes less device resources compared to similar apps.
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    Screenshot
  8. Axcrypt icon

    Axcrypt

    • FreemiumProprietary
    • Mac
    • Windows
    • Android
    • iPhone
    • iPad

    AxCrypt is a simple file encryption software for Windows. It integrates seamlessly with your workflow to encrypt, decrypt, store, send and work with files.

    ⚫︎ PortableAxcrypt can be used from a USB stick or similar with no prior installation.
    ⚫︎ Real time collaborationMultiple users can work together in Axcrypt simultaneously.
    ⚫︎ Works OfflineAxcrypt can be used without the need to connect to the internet.
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    Screenshot
  9. File Lock PEA icon

    File Lock PEA

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • BSD

    Platform-independent password-based authenticated encryption of files & folders.

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    Screenshot
  10. APG icon

    APG

    • FreeOpen Source
    • Android
    • Android Tablet
    • OpenPGP

    Android Privacy Guard (APG) is a free and open source application for Android devices, created by Thialfihar, that lets you encrypt and decrypt single files or emails. Its goal is to provide a similar .

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    Discontinued

    This project was discontinued in favor of OpenKeychain on September 10th, 2017.

    Screenshot
Showing 10 of 35 alternatives