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GPG Suite vs Mailvelope: catalog facts
GPG Suite	Mailvelope
Freemium Downloads are free; the GPG Mail extension needs a paid yearly support plan after a 30-day…	Free Free and open source for personal use. Business products are paid.
macOS	Browser extension
Encrypt, sign and verify files and messages on a Mac GPG Keychain app for managing OpenPGP keys	Works inside existing webmail rather than requiring a desktop mail client Keys stay in the browser under your control
macOS only GPG Mail requires a paid subscription	Only supports a defined list of webmail sites Browser-based key storage is weaker than a dedicated client or smartcard
Downloadable app	Browser extension
Closed source	Open source
License not stated	License: AGPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.