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

Lockbin

Lockbin is a web application for sending private email messages and files. People use it to send things like credit card numbers or confidential information.

Freemium Mac OS X Windows Linux Android Android Tablet

Virtru

Virtru provides digital privacy technology to let you easily share information securely through all major email programs and applications. Virtru puts you in charge of how your digital information is shared.

Freemium iPhone Web Gmail Yahoo! Mail Outlook

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

Symantec Desktop Email Encryption

Desktop Email Encryption provides an end-to-end email encryption solution that automatically encrypts and decrypts email directly from one user's client to...

Commercial Windows

LuxSci

Providing HIPAA-compliant email, secure email & web services since 1999. Secure communications via email, text, chat, video, and web.

Freemium Mac OS X Windows Web Self-Hosted

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