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, Android and GnuPG. The best alternative is TrueCrypt, which is both free and Open Source. Other great apps like OneTime are GnuPG (Free, Open Source), GPG4Win (Free, Open Source), Enigmail (Free, Open Source) and AES Crypt (Free, Open Source).

    This page was last updated Apr 6, 2021

    1. [TrueCrypt is not exactly "Open Source", but the source is available. See the reviews to get more information.] TrueCrypt is a disk encryption software for Windows Vista/XP, Mac OS X, and Linux.

      Discontinued

      Currently unmaintained. Last version, TrueCrypt 7.1a, is still available for download and development has continued via the forks VeraCrypt and 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."

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      • 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.


      • 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.
      • 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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    2. 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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    3. 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.
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      • FreeOpen Source
      • Windows
      • Linux
      • GnuPG
      Kleopatra is a certificate manager and a universal crypto GUI.
    4. AxCrypt is a simple file encryption software for Windows. It integrates seamlessly with your workflow to encrypt, decrypt, store, send and work with files.
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    5. Password-encryption of files and folders. The program is written in Java and therefore platform-independent and runs on nearly every system without installation, but requires a Java Runtime Environment - that is already installed in most cases.
    6. GPG for Mail is an open source plugin for Apple Mail. Encrypt, decrypt, sign and verify mails using OpenPGP with a few simple clicks. GPG Keychain
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    Showing 10 of 37 alternatives