BackTrack 5 comes in several flavours and architectures. This is the amd64 KDE DVD. The Third revision of BackTrack 5, an Ubuntu-based distribution with a collection of tools for penetration testing and ethical hacking, has been released. After months of development, bug fixes, upgrades, and the addition of 42 new tools, the full release of BackTrack 5 R3 available for download. Running our custom-built 3.2.6 kernel with the best wireless support available, this is our fastest and best release of BackTrack yet. In the past few weeks, we have had a flood of submissions to our BackTrack Redmine tracker with submissions for many new tools and dozens of packages that needed to be updated and this has helped to make this one of the strongest releases we've ever had. 
 
About BackTrack
BackTrack is an Ubuntu-based distribution with a collection of security and forensics tools. It was created by merging Auditor Security Linux with WHAX (formerly Whoppix).