GnuPG allows you to encrypt and sign your data and communications. Following are download links for different platforms. Mac: GPG Suite. OpenKeychain for Android: Google Play and F-Droid.
Reviewed by Gabriel Bachmann
Email Encryption
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Threat level
Hardened
A hardened pick. Worth the effort once you have chosen to shrink your footprint on purpose. Enough for most people. Threat levels
Our take
GnuPG remains the standard for encrypting and signing files and mail, and nothing else has its longevity or interoperability. Be honest about the experience: key management is genuinely hard, and the well-known usability problems are why most people quietly abandon PGP email. Worth learning if you must exchange signed or encrypted messages with others who already use it; for private conversation, a modern messenger is far easier to live with.
Website at a glance
gnupg.org
C score 50
Basic website security headers
Graded by Mozilla HTTP Observatory, tested 1d ago
Inspect this site yourself
Measures the security configuration of the tool's own website, not the privacy of the product itself. A strong tool can still score low here.
Email Encryption alternatives
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.
7-Zip File archiver with a high compression ratio and built-in encryption functionality.
FileVault FileVault is the built-in full-disk encryption feature in macOS. On Macs with Apple silicon or a T2 chip, data is encrypted by hardware by default; enabling FileVault adds a login-password gate that prevents decryption without your credentials.
BitLocker BitLocker is the built-in full-disk encryption feature in Windows Pro, Enterprise, and Education editions. It encrypts the operating system drive and fixed data drives using AES-XTS, with optional TPM-backed pre-boot authentication.
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.
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…
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