Free portable cross-platform graphical multi-user password manager
Encrypt and manage secret text data
Provides encryption & password hashing for your app or Hibernate POJOs
Mkpass - Command line Secure Password Generator
Stanford Javascript Crypto Library
GMR digital signature system
Folder & Files encryption - opensource software.
Portable, secure and open source AES256 password manager
This applet implement the HOTP/TOTP smart card functionality.
Compiled into a single .jar file. Tiny Password Manager. Portable
Encrypt Your Text documents with XOR encryption
Replace text with POS equivalent text, in a reversible fashion.
A simple example of polyalphabetic cipher in Java.
A cryptocurrency like Bitcoin improved upon with reality binding.