1. Secunia PSI
This free software will identify if there are security problems in programs which have been installed on our computers and it will ensure that the existing programs are updated with the latest one.
Well, you should try this one...!!! Free and easy. This free software is for scanning your computer/ flashdisk from virus (trojan, etc...), firewall, and the other risks on your computer. Download it here
3. McAfee FreeScan
It also can scan your PC from viruses. You can download it freely, but only by Internet Explorer. You can download this software here
4. Panda ActiveScan
This kind of utilty will scan your hard disk in our PC. You can try by downloading it here
5. Avira AntiVir Personal
This is the popular one to destroy many viruses in your PC...!!! However it cant be used for scanning e-mail, but you can download it freely.
6. AVG Anti-Rootkit
AVG Anti-Rootkit is designed to protect your computer from any risks. One thing that very usefull for us of this software is find and eradicate the rootkit.
7. Ad-Aware Anniversary Edition Plus
Remove malicious software and protect our secrets with antivirus programs by this anti-spyware.
8. Ad-Aware Anniversary Edition Pro
Remove malicious software and protect our secrets with this anti-virus programs in professional level...!!!
9. Spybot Search & Destroy
This kind of Anti-spyware program is free, and it provides proactive protection and effective.
10. Ad-Aware Anniversary Edition Free
By this one, you can remove malicious software and protect our secrets too.
Lets protect your computer guys...!!! :)
AND... NOW, I KNOW...!!!
(c) Written by: Nanda Firsta
Source: Own Experience