WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.
Tiny application which allows encrypting basic text.
Implementation of the EDIINT AS2 protocol (RFC 4130)
Free and open-source PDF signing and verification application.
PGP graphical user interface
Smoke: Android Crypto Chat Messenger
FIDO® Certified StrongKey FIDO Server (SKFS)
cross-platform, encryption application
Java application for encryption
Encrypt and manage secret text data
cross-platform (Java) file encryption and archiving tool
Free portable cross-platform graphical multi-user password manager
Synchronize secrets between PCSecrets and Secrets for Android
Twinkle is an open-source text editor.
Mkpass - Command line Secure Password Generator
python software for cracking and creating SHA and MD5 hashes
Halimede Certificate Authority
Graphical message and file encryption tool