GPGshell is described as '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' and is an app. There are seven alternatives to GPGshell for a variety of platforms, including Windows, GnuPG, OpenPGP, Mac and SaaS apps. The best GPGshell alternative is GPG4Win, which is both free and Open Source. Other great apps like GPGshell are GPGTools, WinGPG, gpg4usb and GNUPGK.
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.
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.
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.
gpg4usb is an easy to use, small portable editor with the possibility to encrypt and decrypt any text-message or -file you want. For encryption it acts as a GnuPG -frontend. Its intend is to be used from an usb-stick, running on Windows(TM) and.
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.
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.
Paubox provides HIPAA compliant email encryption without the hassle of extra steps. Just send emails like normal from any device.
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