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
Keyper by Jarrid is a suite of crypto key management APIs
End-to-end encrypted cloud for photos, videos and 2FA secrets
Keybase Go library, client, service, OS X, iOS, Android, Electron
AWS Encryption SDK
Single Linux or Windows binary for secure text encryption
A beginner-friendly Python CLI tool that audits website cookies.
Secure communication software
Secure Communications Starts Here.
Petoron Quantum Standard (PQS)
A simple file/folder encryption application based on the 7zip-full.
57 Hash Functions In One Program, plus each with HMAC or KMAC
Powerful webdav client and sync tools with client-side AES encryption
Open-source PureBasic implementation of the Shamir Secret Sharing
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
FIDO-enabled, cloud file encryption with centralized key management.
One-time-pad encryption using a virtual pad