APG Alternatives

GnuPG allows to encrypt and sign your data and communication, features a versatile key management system as well as access modules for all kinds of public key directories. GnuPG, also known as GPG, is a command line tool with features for easy integration with other applications.

Enigmail is a security extension to Mozilla Thunderbird and SeaMonkey. It enables you to write and receive email messages signed and/or encrypted with the .

It supports managing X.509 and OpenPGP certificates in the GpgSM keybox and retrieving certificates from LDAP servers.

OpenKeychain helps you communicate more privately and securely.

GPGMail is a PGP plugin for Apple Mail. It brings the functionality to sign, verify, encrypt and decrypt mails using the OpenPGP standard.

Use GPG Suite to encrypt, decrypt, sign and verify files or messages.

WebPG is a free, open source suite of tools to bring OpenPGP (GnuPG/PGP, gpg, gnupg) to the browser, in an effort to make cryptographic methods usable, safe and accessible to the common man.

OneTime is an open source encryption program that uses the one-time pad algorithm to allow two parties to communicate privately. It has features to assist with the bureaucracy of pad management, and comes with built-in help. OneTime requires Python 2.

Autocrypt is a set of guidelines for developers to achieve convenient end-to-end-encryption of e-mails. It specifies how e-mail programs negotiate encryption capabilities using regular e-mails.

oPenGP is a solution to support OpenPGP standard (RFC 4880) on your iOS device.