The Best 34 OneTime Alternatives

  • 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.

    Free Open Source Mac OS X Windows Linux

    Portable Drive Encryption
  • 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.

    Free Open Source Mac OS X Linux Xfce OpenPGP

  • 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.

    Free Open Source Mac OS X Windows Linux Thunderbird SeaMonkey GnuPG

  • 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).

    Free Open Source Mac OS X Windows Linux Android iPhone Android Tablet iPad

  • 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, https://alternativein .

    Free Open Source Windows S/MIME GnuPG

  • 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).

    Free Open Source Windows Windows Mobile

  • 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.

    Free Open Source Windows

  • 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 https://alternativein .

    Free Open Source Android Android Tablet OpenPGP

  • 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.

    Free Open Source Mac OS X GnuPG

  • DCrypt icon

    DCrypt

    DCrypt is an encryption and decryption tool that combines in a smart way multiple algorithms.

    Free Open Source Linux

  • Kleopatra icon

    Kleopatra

    Kleopatra is a certificate manager and GUI for GnuPG. The software stores your OpenPGP certificates and keys.

    Free Open Source Windows Linux GnuPG

  • 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.

    Free Mac OS X Windows

  • dragncrypt ultra icon

    dragncrypt 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.

    Free Windows

  • 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.

    Free Personal Windows

  • 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...

    Free Open Source Mac OS X Windows

  • 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...

    Free Windows

    Portable Shell integration
  • Crypter icon

    Crypter

    Crypter is a console utility to encode-decode, encrypt-decrypt, or digest any file with 64 bases, 35 ciphers, and 126 digester algorithms respectively.

    Free Open Source Windows