Is Multi-platform Virtualization Software that lets you run one operating system within another, which is quite useful for security researchers who commonly need to test code, exploits, etc on multipl
Is a complete, bootable linux system. INSERT comes with a graphical user interface running the fluxbox window manager while still being sufficiently small enough to fit on a credit card-sized CD-ROM.
Is a security hardening script for Linux, Mac OS X, and HP-UX. Its function is to "lock down" an operating system, and configuring the system for increased security.
Is a Linux distribution Pen testing toolkit. It is an excellent CD bootable Linux distribution. It has a huge variety of Security and Forensics tools and a rich development environment.