Gpg4win is the official Windows installer for GnuPG, bundling the Kleopatra certificate manager and GpgOL for Outlook integration. It provides OpenPGP and S/MIME encryption for files and email on Windows.
Gpg4win
gpg4win.org
Our take
Gpg4win makes the power of GnuPG accessible on Windows through Kleopatra’s point-and-click interface, and it is the only officially sanctioned distribution from the GnuPG project for that platform. The Outlook plugin (GpgOL) brings encrypted email to corporate environments without needing a separate email client. The trade-off is that it is Windows-only, and Kleopatra, while polished, still surfaces the complexity of key management to users who just want to encrypt a file. Good pick for Windows users already in the GnuPG ecosystem or needing Outlook integration.
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Gpg4win alternatives
VERNAM A free, fully client-side file encryptor that runs in your browser. Drop in any file, set or generate a passphrase, and it seals the result into its own .vrn format. Nothing is ever uploaded, and it works offline.
PrivacyNotes Zero-knowledge notes, tasks, files, passwords and journal secured by a single 12-word recovery phrase, with no email or password required. The crypto core and database schema are published for audit. No subscription model.
VeraCrypt It can create a virtual encrypted disk that works just like a regular disk but within a file. It can also encrypt a partition or the entire storage device with pre-boot…
Cryptomator Cryptomator encrypts your data quickly and easily. Afterwards you upload them protected to a cloud service.
LUKS LUKS (Linux Unified Key Setup) is the standard disk-encryption specification for Linux, implemented by the cryptsetup utility. It provides a header format and key-slot system on top of the dm-crypt kernel module, supporting multiple decryption passphrases per volume.
GnuPG GnuPG (GNU Privacy Guard) is the free, GPL-licensed implementation of the OpenPGP standard. A command-line tool for Linux, macOS, and Windows, it encrypts and signs files and email, and manages public-key directories.