Alternatives to GPG Suite
An OpenPGP toolkit for macOS for encrypting, signing and verifying files and email. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
GPG Suite
An OpenPGP toolkit for macOS for encrypting, signing and verifying files and email.
Replacements
Listings that take over the same core job as GPG Suite.
GnuPG
Complete free implementation of the OpenPGP standard.
GnuPG is the free open source OpenPGP implementation that runs on macOS and other platforms, but it lacks GPG Keychain's graphical key management and Apple Mail integration.
age
File encryption with one small key, no options to get wrong, and a command you can remember.
age is free and open source for encrypting files with short keys on macOS and elsewhere, but it is command line only and has no signing or mail integration.
Kryptor
Command-line file encryption and signing using modern cryptography.
Kryptor is free and open source file encryption and signing with short public keys, but it is command line only and does not interoperate with OpenPGP.
Also worth comparing
These listings name GPG Suite as their own alternative, so the relationship runs both ways.
FlowCrypt
A browser extension that adds OpenPGP encryption for sending and receiving email in Gmail.
GPG Suite moves OpenPGP email to Apple Mail on macOS only, with a key manager app, and its GPG Mail plugin requires a paid subscription.
KGpg
A KDE graphical front end for GnuPG that manages keys and encrypts files and text.
GPG Suite moves you to macOS with the GPG Keychain key manager and Apple Mail integration, and its mail plugin needs a paid subscription.
Kleopatra
A KDE certificate manager and front end for OpenPGP and S/MIME encryption and signing.
GPG Suite runs on macOS only, providing the GPG Keychain key manager and Apple Mail integration, with a paid subscription for GPG Mail.
Mailvelope
Browser extension that adds OpenPGP encryption to webmail.
GPG Suite handles OpenPGP keys and Apple Mail encryption on macOS only, and its GPG Mail component requires a paid subscription.
OpenKeychain
An open-source Android app that manages OpenPGP keys and encrypts, decrypts and signs messages and files.
GPG Suite handles OpenPGP keys, files and Apple Mail on macOS only, is not open source, and charges a subscription for GPG Mail.
Sequoia PGP
An OpenPGP implementation in Rust with the sq command-line tool for encrypting, signing and managing keys.
GPG Suite provides graphical OpenPGP key management and Apple Mail integration on macOS only, is not open source, and charges for GPG Mail.
Similar software
Related functionality, not a direct replacement.
Gpg4win
GnuPG packaged for Windows with the Kleopatra key manager, for signing and encrypting files and email.
Proton Mail
Official Proton Mail apps for reading and sending end-to-end encrypted email on phones, desktops and the web.