Gpg4win for Windows

Name: Gpg4win
Rating: 3 (1 reviews)
Author: Gpg4win

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Editors’ Review

Download.com staffFebruary 26, 2026

Gpg4win is a Windows installer providing robust encryption and digital signature tools for emails and files. It supports OpenPGP and S/MIME standards.

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Pros
- Supports OpenPGP and S/MIME standards.
- Includes GnuPG core encryption engine.
- Offers certificate management with Kleopatra and GPA.
- Provides Outlook and Explorer integration plugins.
- Free and open-source software.
Cons
- Outlook plugin supports older versions only.
- Explorer plugin is limited to 32-bit systems.
- Claws Mail is a separate email client.

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Full Specifications

GENERAL

Release: February 27, 2014

Latest update: February 26, 2026

Version: 2.2.1

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows 7
Windows 10
Windows Vista
Windows XP

Additional Requirements: None

POPULARITY

Total Downloads: 21,629

Downloads Last Week: 5

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Last Updated

User Reviews

3/5

1 User Votes

Command line works well, Kleopatra and GPA buggy
lcascioSeptember 23, 2013
Pros
I've embedded command line GPG in applications for years and it has never failed me.
Cons
The Kleopatra and GPA GUIs are very poor. The function set is good however both are buggy and will abruptly throw fatal errors even without interacting with them. With GPA there is bizarrely some kind of timeout bug, if you do not fill out the dialog boxes quickly enough, for example when making a new key, it will abruptly throw an error. My experience is on Windows 7, Windows 8, and Windows Server 2008 R2, all the same behavior, rendering it unusable for my company.
Summary

Developer’s Description

By Gpg4win

Protect files and emails using encryption software.

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. Gpg4win supports both relevant cryptography standards, OpenPGP and S/MIME (X.509), and is the official GnuPG distribution for Windows. It is maintained by the developers of GnuPG. Gpg4win and the software included with Gpg4win are Free Software (Open Source; among other things free of charge for all commercial and non-commercial purposes).

Gpg4win is an installer for Windows and contains several Free Software components:

GnuPG: The core; this is the actual encryption tool.

Kleopatra: A certificate manager for OpenPGP and X.509 (S/MIME) and common crypto dialogs.

GPA: An alternative certificate manager for OpenPGP and X.509 (S/MIME).

GpgOL: A plugin for Microsoft Outlook 2003 and 2007 (email encryption).

GpgEX: A plugin for Microsoft Explorer 32bit (file encryption).

Claws Mail: A complete email application with crypto support.

Gpg4win Compendium: The documentation (for beginner and advanced users), available in English and German.

Gpg4win for Windows

Editors’ Review

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Pros

Cons