Tutanota is an email client with a strong focus on security and privacy that lets you encrypt emails on all your devices.
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A
AES CryptTerrapane Group, Inc.
Terrapane.AESCryptv4.5.0
AES Crypt for Windows (30-day trial)
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R
ragestr4d
str4d.ragev0.11.1
Rage age implementation
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S
Spacedrivespacedrive
spacedrive.Spacedrivev0.4.3
Spacedrive is an open source cross-platform file explorer, powered by a virtual distributed filesystem written in Rust.
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simple-acmesimple-acme
simple-acme.simple-acmev2.3.6.2257
A simple cross platform ACME client (for use with Let's Encrypt et al.)
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T
Trusty MessengerNicolas Altmann
sibexico.Trustyv0.5.2
End-to-end encryption in any conversation
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E
ErisNicolas Altmann
sibexico.Erisv0.52.1
Desktop PGP workstation
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ProtonClientLuca Steccanella
Steccas.ProtonClientv1.2.3
An unofficial desktop client for ProtonMail done with electron nativefier
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Standard NotesStandard Notes
StandardNotes.StandardNotesv3.201.21
An end-to-end encrypted notes app for digitalists and professionals.
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S
stepSmallstep
Smallstep.stepv0.30.2
A Swiss army knife for working with X.509 certificates, JWTs, etc.
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SimpleX ChatSimpleX
SimpleX.SimpleX-Chatv6.4.11
SimpleX - the first messaging network operating without user identifiers of any kind - 100% private by design! iOS,
Android and desktop apps 📱!
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S
Shaka PackagerShaka Project
ShakaProject.ShakaPackagerv3.7.2
A media packaging and development framework for VOD and Live DASH and HLS applications, supporting Common Encryption for Widevine and other DRM Systems.
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SessionOxen Labs
Session.Sessionv1.18.0
Onion routing based messenger
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Secure Exchanges Outlook Area Sign FormSecure Exchanges
SecureExchanges.SEOASFv2026.03.241
Secure Exchanges OASF client for Windows.
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GpgFrontendSaturneric
Saturneric.GpgFrontendv2.1.9
A modern, cross-platform, open-source GUI for OpenPGP encryption.
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eID softwareRIA
RIA.eIDsoftwarev25.10.23.8403
Use your ID-card electronically, digitally sign documents and encrypt documents for safe transfer.
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DigiDoc4 ClientRIA
RIA.DigiDoc4v4.9.0
DigiDoc4 is an application for digitally signing and encrypting documents; the software includes functionality to manage Estonian ID-card - change pin codes etc.
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QENC DecrypterQNAP Systems, Inc.
QNAP.QENCDecrypterv1.2.1.25269
Before sharing sensitive and/or confidential files from your NAS, use File Station to encrypt them into .qenc files.
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G
git-ageprskr
prskr.git-agev0.3.0
git-age is a smudge/clean filter to encrypt/decrypt files in a git repository transparently
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i2pdPurpleI2P
PurpleI2P.i2pdv2.56.0
i2pd (I2P Daemon) is a full-featured C++ implementation of I2P client.
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Proton PassProton AG
Proton.ProtonPassv1.36.1
Open-source and encrypted password manager
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PicocryptEvan Su
Picocrypt.Picocryptv1.49
A very small, very simple, yet very secure encryption tool.
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Paranoia File & Text EncryptionParanoia Works
ParanoiaWorks.PFTEv16.1.43
Encrypt files, folders, and text with strong algorithms. Includes steganography and post-quantum key exchange (ML-KEM).
