GnuPG for Windows
Complete and free implementation of the OpenPGP standard
A simple, modern and secure encryption tool (and Go library)
Secure software enclave for storage of sensitive information in memory
Keybase Go library, client, service, OS X, iOS, Android, Electron
AWS Encryption SDK
End-to-end encrypted cloud for photos, videos and 2FA secrets
Keyper by Jarrid is a suite of crypto key management APIs
A beginner-friendly Python CLI tool that audits website cookies.
Secure Communications Starts Here.
Secure communication software
Petoron Quantum Standard (PQS)
Open-source PureBasic implementation of the Shamir Secret Sharing
Powerful webdav client and sync tools with client-side AES encryption
SuProtection , secure file encryption and password manager
STROBE cryptographic protocol framework
File Encryption/Decryption using password
Stanford Javascript Crypto Library
FIDO strong authentication, encryption, digital signature engine
A Collection of Useful Java/Swing Code
Secure mail + Tor gateway
Simple but Powerful, Cross-Platform Password Management Utility