Cost / License
- Pay once
- Open Source
Platforms
- Mac
- GnuPG




Kleopatra is described as 'Certificate manager and a universal crypto GUI' and is a file encryption software in the security & privacy category. There are more than 25 alternatives to Kleopatra for a variety of platforms, including Windows, Mac, Linux, Android and OpenPGP apps. The best Kleopatra alternative is GnuPG, which is both free and Open Source. Other great apps like Kleopatra are GPG4Win, OpenKeychain, AES Crypt and Lock GnuPG.




Unicode Crypter is a portable tool that encrypts and decrypts any Unicode character from 1 to 1114111!

PGPigeon is a simple but powerful OpenPGP -compatible message encryption webapp based on the openpgp.js library.




Toolsley PGPigeon is the most popular Web-based alternative to Kleopatra.
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 without the password.
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.

Lock and encrypt your photos, movies, files and folders using 256-bit file encryption.




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.

File Encryption XP encrypts files and folders using a strong Blowfish algorithm with 384-bit key. Protected files that can be decrypted without File Encryption XP is a built in program feature. You can create a self-extracting encrypted file and simply send it by mail or give it...




OneTime is an 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.

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

Cryptext helps you secure your writings and notes easily. Cryptext use AES algorithm to protect the content of your texts.


CipherMail for Android is an Android application which can be used with your existing Android mail application to send and receive S/MIME digitally signed and encrypted email with an Android smartphone.

While both support encryption and thereby privacy, OneTime does not manage certificates or keys used for encryption. Therefore this is not a meaningful alternative to Kleopatra. That said, is can be a good form of secure one-time communication.