A really secure user authentication system in PHP and MySQL.
Java brute force system of equations solver
Detect Flooder IPs, Reduce Attack Surface against HTTP Flood Attacks
Block undesired IPs for vsftp
Checker for recursively arbitrarily partitionable balloons
thad0ctor's BT5 toolkit streamlines word list creation and other tasks
Block countries via iptables and gui menu with country flags.
Password recovery tool for compressed archives and md5, sha-1/2 hashes
Training and educating about the web security
A simple script for distributed computing through PHP:
Software to balance a chemical equation (redox too)
Code to brute force the 32-bit key used to RC4 encrypt .pwl files.