OS Freeware tools - Linux, Windows, OS X

Great sysadmin freeware tools listed in random order:

• Gnome Partition Editor (GParted): http://gparted.sourceforge.net
• Knoppix: http://www.knopper.net/knoppix
• BartPE http://www.nu2.nu/pebuilder/
• NiroSoft Tools: http://www.nirsoft.net/utils/index.html
• Sysinternals Suite: http://technet.microsoft.com/en-us/sysinternals/bb545027
• Trinity Rescue Kit: http://trinityhome.org
• Kaspersky Rescue Disk: http://support.kaspersky.com/viruses/rescuedisk
• ddRescue: http://www.gnu.org/software/ddrescue/ddrescue.html
• F-Secure Rescue CD: http://www.f-secure.com/en/web/labs_global/removal/rescue-cd
• SafeCopy: http://safecopy.sourceforge.net/
  
  

Note: Most of these tools have no official end user support. So, Use at your own risk.