NOT FREE:
acronis
The rest is FREE USEFUL SOFTWARE
For the standard home user, I recommend the following suite:
Firefox web browser, to replace Internet explorer
http://www.mozilla.com/en-US/firefox/
Openoffice, to replace Microsoft Office
http://download.openoffice.org/
gfortran, to compile fortran programs
http://gcc.gnu.org/wiki/GFortranBinaries
Latex base
Texnic center, Latex code editor
http://www.texniccenter.org/resources/required-components/29
Free antivirus software:
http://www.avira.com/en/download/
putty
http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
Winscp
http://winscp.net/eng/download.php
http://winscp.net/download/winscp421.exe
Windows to Linux file transfer
Xming
http://www.straightrunning.com/candidate/Xming-7-4-0-2-setup.exe
http://www.straightrunning.com/XmingNotes/
For advanced users,
data backup
PC Inspector:
http://www.pcinspector.de/Sites/file_recovery/download.htm?language=1#
visualize disk usage:
Windows Directory Statistics
Free NTFS, FAT recovery for windows
DVD+R DL burner. Trial software
network packet sniffer. Free
Java Runtime Environment, offline installer. Free
emulate windows and linux OSs. Free
PDF viewer AND PRINTER
PDF viewer
cdburn command prompt
mount ISOs in windows
Encrypted containers, plausible deniability, encrypted windows boot partitions
firefox MSI:
http://www.frontmotion.com/Firefox/download_firefox.htm
email client. Free
clean up files.
belarc advisor
cc ccleaner
malware bytes
super anti spyware
Avira
http://www.avira.com/en/download/
sys internals, auto runs, psexplorer, procmon, rootkit revealer, regdelnull ...
mrt.exe from microsoft
MBSA also from microsoft
combo fix
sd fix
ewido antimalware
Windows Defender
updates for NAV, SAV for offline updating
If you don't know something, google it.
You should be comfortable with the following:
PBX