1. Free YAC Removal Tool
YAC is exactly that:
an efficient little program makes fast work of outdated registry
entries, cookies, and temporary files. YAC also helps clean up browser
homepage and search that are bundled via malicious plug-ins.- A Registry Cleaner That Doesn't Break Things
- Protect the browser from malicious plug-ins
- Speeds up slow computers, helps save disk space
- Features are all straightforward and simple to use
2.Avast! Free Antivirus 8
AVAST Software's avast! Free Antivirus 8 most certainly deserves to be
on any list of the best free antivirus programs. avast! Free Antivirus
has fully functioning antivirus and antispyware engines protecting your
PC from threats from the Internet, your files, emails, and even instant
messages.
3.Panda cloud antivirus free 2
Panda Cloud Antivirus Free 2 protects you from several kinds of malware
threats - viruses, worms, Trojans, adware, and more - just like all the
other free antivirus programs in this list.
4.Immunet FREE Antivirus 3
Immunet FREE Antivirus 3 is a unique, cloud-based antivirus program,
much like Panda Cloud Antivirus and Kingsoft Antivirus. Immunet FREE
Antivirus 3 protects your computer from bots, worms, viruses, Trojans,
keyloggers, and spyware. 
5.PC Tools Antivirus free 9
PC Tools AntiVirus Free 9 offers basic protection against viruses and
other malware. While not my favorite, AntiVirus Free is still one of the
best free antivirus programs you'll find.PC Tools AntiVirus Free 9
works on Windows 7, Windows Vista, and Windows XP. 
