GnuPG is a command-line cryptography toolkit for encrypting, decrypting, signing, and verifying data using OpenPGP and related capabilities, providing key-management tools that can integrate with email clients, scripts, and other applications.
OpenPGP encryption
Digital signatures
Key management
Application integration
Is it a good fit?
Best suited to
Technical users exchanging encrypted files and verifying signatures
Before you choose
Key trust needs human judgment. Command-line options take learning.
Editorial assessment based on the provider’s published information. Our method
Know what you're signing up for.
The listed GnuPG software is available without a license fee under GNU GPL. Included capabilities cover openpgp encryption, digital signatures, key management. Free cryptographic tools; external frontends and services have their own terms.
Open-source software
$0ongoing software access
Free cryptographic tools; external frontends and services have their own terms.
GnuPG is a useful option for technical users exchanging encrypted files and verifying signatures. Generate or import keys in a test environment and verify fingerprints through a trusted channel before exchanging sensitive material. Start with a small, representative task so you can check the results before extending the setup.
Keep a protected key backup and revocation information, and distinguish signature verification from trust in the sender's identity. Consider the practical trade-off: key trust needs human judgment.
A few things you might be wondering.
Is GnuPG free?
The listed GnuPG software is available without a license fee under GNU GPL. Included capabilities cover openpgp encryption, digital signatures, key management. Free cryptographic tools; external frontends and services have their own terms.
Does a valid signature prove identity by itself?
It proves a relationship to a key; you still need to establish that key's owner.
Can GnuPG be used through a graphical application?
Yes. Separate frontends and integrations provide graphical workflows around the command-line tools.
Where can I check the latest prices?
Use the provider link on this page. Billing period, location, team size, promotions, taxes, and optional extras may affect the amount you pay.
How should I compare this tool with alternatives?
Choose tools for the same task, then compare their feature limits, platform support, and total cost for your team. The Compare button helps you keep a shortlist.
Are the user reviews moderated?
Yes. New reviews are submitted for moderation. We show published user reviews separately from the editorial overview and never assign a default user rating.
Cryptomator encrypts files before they reach a storage provider, presenting unlocked vaults as usable folders while keeping encrypted filenames and contents in the underlying location, making it useful alongside existing cloud-sync or local-storage workflows.
Free & open source
Free desktop encryption; storage providers, mobile apps, and organizational offerings are separate.
VeraCrypt creates encrypted containers and can encrypt partitions or devices, mounting protected storage as a usable disk after authentication, with additional Windows system-encryption support for users who need control over data stored at rest.
Free disk encryption
Free ongoing disk-encryption software; custom source-license terms apply, and no recovery service is provided.
age is a compact file-encryption tool that uses explicit recipient keys or passphrases and works well in command-line pipelines, making it useful for protecting files without the broader identity and message-management features of OpenPGP.
Free & open source
Free file-encryption tool; key custody and storage services are separate.
WireGuard provides encrypted network tunnels using public-key identities and compact configuration, enabling administrators to connect devices or networks through a VPN protocol that is integrated into Linux and available through clients on other platforms.
Free & open source
Free VPN software; server hosting, connectivity, and any VPN provider subscription are separate.
