Software MaMe

Nmap - Free Security Scanner For Network Exploration & Security Audits.: "Nmap ('Network Mapper') is a free open source utility for network exploration or security auditing. It was designed to rapidly scan large networks, although it works fine against single hosts. Nmap uses raw IP packets in novel ways to determine what hosts are available on the network, what services (application name and version) those hosts are offering, what operating systems (and OS versions) they are running, what type of packet filters/firewalls are in use, and dozens of other characteristics. Nmap runs on most types of computers and both console and graphical versions are available. Nmap is free and open source (license)."

ettercap: "Ettercap is a suite for man in the middle attacks on LAN. It features sniffing of live connections, content filtering on the fly and many other interesting tricks.
It supports active and passive dissection of many protocols (even ciphered ones) and includes many feature for network and host analysis. "

Mozilla Firefox, Portable Edition | PortableApps.com - Portable software for USB drives: "Mozilla Firefox, Portable Edition
your browser, your way... in your pocket™

Mozilla Firefox�, Portable Edition is the popular Mozilla Firefox web browser bundled with a PortableApps.com Launcher as a portable app, so you can take your bookmarks, extensions and saved passwords with you."