WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.
Add digital signatures to PDF documents - GUI and CLI, cross-platform
Implementation of the EDIINT AS2 protocol (RFC 4130)
PGP graphical user interface
FIDO® Certified StrongKey FIDO Server (SKFS)
Java application for encryption
Tiny application which allows encrypting basic text.
Free portable cross-platform graphical multi-user password manager
Encrypt and manage secret text data
Free and open-source PDF signing and verification application.
cross-platform, encryption application
Synchronize secrets between PCSecrets and Secrets for Android
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.
Smoke: Android Crypto Chat Messenger
Twinkle is an open-source text editor.
Mkpass - Command line Secure Password Generator
Graphical message and file encryption tool
FinalCrypt - Unbreakable One-Time Pad Encryption
A free and easy-to-use password protected file archiver
Java Encryption Utility.
If You want to change your passwords globally, this program is for You