Free GUI replacement for Java command-line utilities keytool/jarsigner
cross-platform, encryption application
Enigma Encryption Simulator in Java
cross-platform (Java) file encryption and archiving tool
Provides encryption & password hashing for your app or Hibernate POJOs
Java application for encryption
Mkpass - Command line Secure Password Generator
A command line interface for encryption and decryption using the NTRU
Centralized signing and verification
FinalCrypt - Unbreakable One-Time Pad Encryption
A library for easy use of symmetric encryption and decryption in java
Java Encryption Utility.
SLS Team Java Library
GMR digital signature system
FIDO strong authentication, encryption, digital signature engine
MD5 Checksum Tool
The Remarc Mobile-ID USAT applet
Open Source Security tool to audit hashed passwords.