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.
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.
GnuPG is the most popular Mac & Linux alternative to Kleopatra.
GnuPG is the most popular Open Source & free alternative to Kleopatra.
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.
GPG4Win is the most popular Windows alternative to Kleopatra.
OpenKeychain helps you communicate more privately and securely. It uses high-quality modern encryption to ensure that your messages can be read only by the people you send them to, others can send you messages that only you can read, and these messages can be digitally signed so...
OpenKeychain is the most popular Android & Android Tablet alternative to Kleopatra.
Easily encrypt files with user-friendly software using the powerful AES standard for security on Windows, macOS, and Linux, featuring robust 256-bit encryption for safeguarding sensitive data from unauthorized access, ideal for secure data storage, email transmission, and internet uploads.
AES Crypt is the most popular iPhone & iPad alternative to Kleopatra.
AES Crypt is the most popular commercial alternative to Kleopatra.
Multron File Guardian - A File Encrypter/Decrypter With Many Encryption Algorithm.
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.
FreeOTFE is a free, open source, "on-the-fly" (OTFE) disk encryption program for PCs running MS Windows and Windows Mobile PDAs (FreeOTFE4PDA).
An open-source system tray utility for Windows, giving you quick access to your GnuPG keyring at any time with the ability to encrypt, decrypt and sign files on the fly.
Seahorse is a GNOME application for managing encryption keys and passwords in the GNOME Keyring.
Both are able to deal with PGP certs & keys. Could not find if / where Seahorse handled importing X509 certs
GoAnywhere OpenPGP Studio™ is a free desktop tool that makes it easy to protect sensitive files using the popular OpenPGP encryption standard. Documents can be encrypted, decrypted, signed and verified from your PC or workstation using this...
Does not handle x509 certificates; therefore only does half (1/2) of what Kleopatra does.
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.
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AES Crypt (uses AES encryption) works in a different way than Kleopatra (using OpenPGP) does.