A chat client that uses AES to encrypt/decrypt transmissions and Diffie Hellman to establish the secret password. It uses random numbers so the user doesn't enter any passwords, it just works. User guide: Here

A tool that lets you capture and analyze network traffic easily with a nice GUI. Some predefined ports/applications are available such as MSN, FTP, email, HTTP etc. You can also filter and search all recorded traffic. You can also specify a specific port to listen to. Remember to follow the readme to install.