GPG4Win!

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. A wealth of frontend applications and libraries are available. Version 2 of GnuPG also provides support for S/MIME.

GPGTools is an open source initiative to bring OpenPGP to Apple OS X in the form of an easy installer package. This allows you to sign, verify, encrypt, and decrypt files and e-mails. Read the introduction to get a detailed idea of how PGP works.

gpg4usb is an easy to use, small portable editor with the possibilityto encrypt and decrypt any text-message or -file you want. For encryption it acts asa gpg-frontend (http://gnupg.org/ ). Its intend is to be used from an usb-stick,running on Windows(TM) and Linux. Providing a mac-binary is on our TODO-list.

GPG for Mailis an open source plugin for Apple Mail. Encrypt, decrypt, sign and verify mails using OpenPGP with a few simple clicks.

WinGPG is a tray-based classical Windows application, Windows NT Explorer shell extension, and a classic GPGv2 distribution. It offers you an opportunity to manage keys and files easily. Our utility provides a simple and effective GUI, and we make it available under the GPL license.It supports the following operations: Key management (create, import, export, revoke), Encrypt/Decrypt, Sign /Verify for files, WinNT Explorer support via context menus, Global shortcuts working from the active explorer window or clipboard, Clipboard support both for texts and files, No complicated setup ( just run batch file).WinGPG registers shortcuts and extensions into your system and lets you work more comfortably and configurably. In our application we use your existing keys. If you already have GPG keyring in the standard location, WinGPG will use it automatically and all your keys will be the same »

The perfect solution for regulated industries use of email to communicate protected health information (PHI); Paubox email solution is HIPAA compliant and will sign Business Associate Agreements. Great for small to medium sized practices required PHI compliance, but don't have the resources for an expensive IT management and confusing enterprise solution.

p=p is a cyber security solution which protects the confidentiality and reliability of communications for citizens, for public offices and for enterprises.

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.

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.

Desktop Email Encryption provides an end-to-end email encryption solution that automatically encrypts and decrypts email directly from one user's client to another's without the need to log into a third-party website or by other means.

GPGshell is a Windows GUI for the GNU Privacy Guard - an open source software suite for public-key cryptography compatible with PGP. It provides a simple-ish interface to manage the encryption keys, encrypt and sign files, check the signatures and the like. It is freeware (though, unlike GPG, not free software) and with little effort can be made portable.

A GnuPG Frontend GUI made in C#. It is compatible with PGP as well so it can be a very useful tool for encryption/decryption. It also incorporates a shell extension so it can be easy to right click and decrypt or decrypt.

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

gpg4o preserves the privacy of your electronic correspondence

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 2.6 or higher, and is for users who are comfortable running command-line programs.