Antivirus:
NOD32 (pay)
AVG
Free Virus Removers from NOD32
VirusTotal, Scan a file with 32 AV programs.
Similar to VirusTotal
Antispyware:
Spybot S&D
Ad-Aware 2007
SpywareBlaster
Windows Defender (not very effective)
Webroot SpySweeper (pay, very slow)
Advanced Antispyware:
HijackThis
Rootkit Revealer
CWS Shredder
Kill-2-me
WinsockXP Fix
Fixblast (symantec)
Smitrem (removes Smitfraud/zlob)
Sysinternals
Software Firewall:
ZoneAlarm
Special Tools:
ForceDel
ycopy
md5sum.exe
heater.exe
Utilities:
JDiskReport
NetStumbler
CPU-Z
Speedfan
Intel PIU
Programs:
7-zip
Foxit Reader
VLC
TweakUI XP
PDF Creator
Nvu (discontinued???)
FileZilla
Firefox
Opera
Notepad++
Google Earth
Photostory 3
Plugins:
Flash
Java
Quicktime
Report a borken link