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

GPGTools

Use GPG Suite to encrypt, decrypt, sign and verify files or messages. Manage your GPG Keychain with a few simple clicks and experience the full power of GPG easier than ever before.

Free Open Source Mac OS X GPG Suite

Paubox

Paubox provides HIPAA compliant email encryption without the hassle of extra steps. Just send emails like normal from any device.

Commercial Mac OS X Windows Android iPhone Web Blackberry Windows RT Windows Mobile

GPGshell

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...

Free Windows

p=p pretty Easy privacy

It offers an automatic and easy to use solution with end-to-end protection for all written digital communications over the Internet. It have been designed to provide...

Commercial Windows Android

Egress Switch Secure Email and File Transfer

Egress Switch Secure Email enables users to send and receive sensitive data securely, including emails and file attachments.

Commercial Windows Web Microsoft Office Outlook Microsoft Office 365

Toolsley PGPigeon

pgpigeon is a simple but powerful openpgp -compatible message encryption webapp based on the openpgp.js library. you can encrypt...

Free Web Chrome OpenPGP