Alternatives to OneTime for all platforms with any license

Platforms

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  • TrueCrypt icon

    TrueCrypt

    [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. Creates a virtual...

    Open Source Mac Windows Linux

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    • Discontinued Currently unmaintained. Last version, TrueCrypt 7.1a, is still available for download and development has continued via the forks https://alternativeto.net/software/veracrypt/ and https://alternativeto.net/software/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."
  • GnuPG icon

    GnuPG

    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...

    Open Source Mac Linux PortableApps.com Xfce

  • Enigmail icon

    Enigmail

    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 OpenPGP standard. Sending and receiving encrypted and digitally...

    Open Source Mac Windows Linux Thunderbird SeaMonkey

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  • GPG4Win icon

    GPG4Win

    Gpg4win is an installer package for Windows (2000/XP/2003/Vista) with computer programs and handbooks for email and file encryption. Both relevant cryptography standards are supported, OpenPGP and S/MIME. Gpg4win and the software...

    Open Source Windows

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  • AES Crypt icon

    AES Crypt

    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). A...

    Open Source Mac Windows Linux Android iPhone Android Tablet ... iPad

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  • LibreCrypt icon

    LibreCrypt

    LibreCrypt (formerly DoxBox) is an open-source disk encryption for Windows and the successor of FreeOTFE Change of name to 'LibreCrypt' in version 6.2 Features: Easy to use, with a 'wizard' for creating...

    Open Source Windows

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  • APG icon

    APG

    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 OpenPGP implementation as...

    Open Source Android Android Tablet

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  • Encrypto icon

    Encrypto

    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...

    Free Mac Windows

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  • FreeOTFE icon

    FreeOTFE

    FreeOTFE is a free, open source, "on-the-fly" (OTFE) disk encryption program for PCs running MS Windows and Windows Mobile PDAs (FreeOTFE4PDA). It creates "virtual disks" - anything written to which is...

    Open Source Windows Windows Mobile

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    • Discontinued Discontinued per Wikipedia page (https://en.wikipedia.org/wiki/FreeOTFE)
  • DCrypt icon

    DCrypt

    DCrypt is an encryption and decryption tool that combines in a smart way multiple algorithms. The combination of multiple strong algorithms makes it much more difficult for hackers to get the plain content of the encrypted file...

    Open Source Linux

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  • GPG Suite icon

    GPG Suite

    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 is an open source application for Mac OS X. It allows you to manage your OpenPGP...

    Open Source Mac

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  • Drag'n'Crypt ULTRA icon

    Drag'n'Crypt ULTRA

    Drag'n'Crypt ULTRA is a small, coding program assistance whose you confidential data which can be served very simply against the access of unauthorized ones protect can. You draw the file (EN), which can be coded, simply on...

    Free Windows

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  • Steadycrypt icon

    Steadycrypt

    This is a Java-based application that allows the user to important files that are on that operating system to encrypt easy and secure and organize. Tested on WinXP, Win7 & OS X 10.6

    Open Source Mac Windows

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  • Challenger icon

    Challenger

    Challenger is a software for the encoding of files, folders and drives. For the installation and for the execution simple user rights suffice. Thereby the program is mobil usable on an USB flash drive too. The software is conceived...

    Free Personal Windows

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  • Outlook-Privacy-Plugin icon

    Outlook-Privacy-Plugin

    Outlook Privacy Plugin is a security extension for Outlook 2010. It enables Outlook 2010 to send and receive email messages that are encrypted and/or signed with the OpenPGP standard. Outlook Privacy Plugin uses GNU Privacy Guard...

    Open Source Windows Microsoft Office Outlook

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  • Quick File Locker icon

    Quick File Locker

    Do you want to protect private pictures, hide sensitive videos or lockdown documents? Do you want to ensure your privacy by locking, hiding and encrypting sensitive data? It will quickly lock, hide and encrypt files, folders or or USB...

    Free Windows

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  • iGPMail icon

    iGPMail

    iPGMail is an app that implements the OpenPGP standard (RFC 4880, RFC 6637) and allows the user to create and manage both public and private (RSA, DSA, ECDSA) PGP keys and send and receive PGP encrypted messages.

    Commercial iPhone iPad

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  • GostCrypt icon

    GostCrypt

    The Gostcrypt project has been launched at the end of 2013 as fork of the (late) Truecrypt project. It intends to go farther than ever. Since the late 70s, most of the algorithms used (not to say all) are UKUSA encryption systems...

    Free Mac Windows Linux

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  • Kruptos icon

    Kruptos

    Lock and encrypt your photos, movies, files and folders using 256-bit file encryption. The trial version of Kruptos 2 Professional is fully complete with no functional limitations for 30 uses. After the trial period expires you...

    Freemium Windows Android

  • Krypta icon

    Krypta

    Background: In 2013, the people of the world learned that our privacy was being violated. This 'program' is known as PRISM, and involves the United States Federal Government and many multinational corporations. In the...

    Commercial Mac Windows Linux

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  • GoAnywhere OpenPGP Studio icon

    GoAnywhere OpenPGP Studio

    GoAnywhere OpenPGP Studio™ is a free desktop tool that makes it easy to protect sensitive files using the popular Open PGP encryption standard. Documents can be encrypted, decrypted, signed and verified from your PC or workstation...

    Free Mac Windows Linux BSD

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  • VSEncryptor icon

    VSEncryptor

    VSEncryptor is an easy to use file and text encryption program. You can encrypt any file or text you choose. To access the file (or text) again, you would need access to the password that was used while encrypting. VSEncryptor is a...

    Free Windows

    • Discontinued Check http://lokibit.com/download.htm, where it says of this: "It is old version. This version is not supported." Appears to be superseded by http://alternativeto.net/software/vsfileencrypt/
  • Encreep icon

    Encreep

    Simple portable GUI for GnuPG that lets you encrypt & decrypt data.

    Free Windows

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  • oPenGP icon

    oPenGP

    oPenGP is a solution to support OpenPGP standard (RFC 4880) on your iOS device.

    Commercial iPhone iPad

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  • nCrypted Cloud icon

    nCrypted Cloud

    nCrypted Cloud is a Privacy, Security, and Collaboration solution that gives users full control over their personal and corporate Dropbox data. nCrypted Cloud adds client side encryption to your Dropbox existing data, and does not...

    Freemium Mac Windows Web / Cloud Android

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  • VSFileEncrypt icon

    VSFileEncrypt

    VSFileEncrypt is an easy to use file encryption program. You can encrypt any file you choose. To access the file again, you would need access to the password that was used while encrypting. VSFileEncrypt is a serious solution, but at...

    Freemium Windows

    No features added Add a feature

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