OpenKeychain
OpenKeychain helps you communicate more privately and securely.
17 Alternatives To OpenKeychain
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APG
Android Privacy Guard (APG) is a free and open source application for …
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Autocrypt
Convenient End-to-End Encryption for E-Mail
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Bridge
Bridge is a program designed to help designers come together despite their background to manage new projects.
ElectronMail
Unofficial desktop app for ProtonMail and Tutanota end-to-end encrypted email providers
Enigmail
Security extension to Mozilla Thunderbird and SeaMonkey
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GPG Suite
Use GPG Suite to encrypt, decrypt, sign and verify files or messages.
GPGMail
GPGMail is an open source plugin for Apple Mail.
GnuPG
GnuPG is a complete and free implementation of the OpenPGP standard as defined by RFC4880 (also known as PGP).
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Kleopatra
Kleopatra is a certificate manager and GUI for GnuPG.
Mailvelope
Mailvelope open source project. OpenPGP in your browser.
OneTime
Multiple timezones on one simple dial
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OnionMail
OnionMail the TOR encrypted Mail Server
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SCRYPTmail
End-to end encrypted email service with no stored metadata
Tutanota
Get your encrypted mailbox for free.
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Vivaldi Mail
Free email service with no ads and no strings attached. Also contacts and calendar features.