Digital Forensics Framework
Download latest release
DFF is included in the official Debian distribution. Thanks to @pollux7, you can now 'apt-get install dff' from testing and unstable repositories.
Penetration Testing and Security Auditing Linux Distribution.
Computer Forensic Live Distribution
SANS SIFT Kit
Free VMware Appliance pre-configured with all the necessary tools to perform a detailed digital forensic examination.
Repository of packages for Linux distributions (Fedora/CentOS)