Live View - Open Source Forensics

Live View creates a virtual machine from a raw disk image or physical disk. As a result, you can see and interact with a PC just as the user did, without changing the environment or endangering your own PC. Operating System: Windows.

TrueCrypt - Open Source System Security

TrueCrypt is a Free open-source disk encryption software for Windows 7/Vista/XP, Mac OS X, and Linux. It can create a virtual encrypted disk within a file or encrypt a partition or (under Microsoft Windows except Windows 2000 and Windows 8 with GPT) the entire storage device (pre-boot authentication).

Open Source Security Tool

PeerBlock is an advanced IP blocking utility

PeerBlock lets you control how your PC interacts with other computers over the Internet, letting you block servers and sites known to be troublesome or even dangerous. It lets you choose what to block, and you can also import or create your own lists.

Sabayon - Open Source System Management

Sabayon Linux or Sabayon (formerly RR4 Linux and RR64 Linux), is a Gentoo-based Linux distribution. Sabayon follows the "Out of the box" philosophy, aiming to give the user a wide number of applications ready to use and a self-configured operating system. Sabayon Linux features a rolling release cycle, its own software repository and a package management system called Entropy. Sabayon is available in both x86 and AMD64 distributions and there is support for ARMv7 in development for the BeagleBone.