The Identity Manager provides a solution to manage the user life cycle
Knock Code for Windows - While Screen On
BTS Pentesting Lab - a deliberately vulnerable Web application
Encrypt Your Text documents with XOR encryption
Replace text with POS equivalent text, in a reversible fashion.
Runs untrusted code in a safe, sandboxed environment easily.
Personal Password Manager
A simple example of polyalphabetic cipher in Java.
A cryptocurrency like Bitcoin improved upon with reality binding.
Monitor Activity on your Computer by Auto Screenshot Capture
Provide users with a managed temporary access to arbitary FTP
Data Access Layer 4 Java
capturing packet and detecting intruders with their signature