A free, open-source, robust yet user-friendly, compact and cross-platform tool for OpenPGP encryption. It stands out as an exceptional GUI frontend for the modern GnuPG (gpg).

QtPass is a multi-platform GUI for pass, the standard unix password manager.

Command line password manager powered by GnuGPG.

C++ GPG email processing library ("Email GPG crypto")

A graphical threads-with-tags style, lightweight and fast, e-mail client for Notmuch

This is a GPG plugin for the Kate text editor

GPG key management, encryption/decryption, sign/verify GUI software, based on OpenPGP standard

opmsg message encryption

Generate OpenPGP keys with fingerprints that match a specific pattern (a.k.a. vanity keys)

Cracker GPG usando programación multihilo en lenguaje C++.

Clean up and manage your gnupg keyring

A console-based mail-client with integrated Lua scripting support.

A tool to help using SSH with GPG keys on Windows

opmsg p2p transport network

A small application using public key methods for file encryption.

GPG Qt Interface for Desktop