AVAST

This is a very good antivirus software and also a freeware. You require to register at their site for a free registration code. The main features of this software are resident shield,boot-time scan, Memory test during the program startupuniversal email scanner, outlook scanner,also scans for IM ,PHP,etc. Besides this is the only antivirus program i have seen that is able to clean viruses from Zip files. Most of the antivirus programs are unable to clean viruses from zip files. One has to them generally manually. But with Avast its automatic.Free Updates [program as well virus signatures]. Updates are also automatic and signature updates are of small size (in kbs).Support is available and also free.This is a very good antivirus package.Even paid programs like Norton, Mcafee simply cannot get anyway near this strong and simple freeware antivirus program. Just check for yourself, you will be amazed.
**Avg was having big virus updates in the beginning until last year 2004, size in mb's , which made me think for a antivirus which would give me the same protection and also lower size updates. Upon a long find, i finally came upon this wonderful software, which almost 3 yrs back [i have been using since then ] was giving incremental virus signature updates, size being in kb's. Throughout my use of AVG and Avast so far, i never had the problem of a virus infection. Though of course personal precaution also does matter.

AVG

The very first antivirus program installed by me on my pc 6 yrs back. My PC vendor had given me a outdated Mcafee which was still of the DOS era. I could feel that with internet growing and the greater risk of virus infection i needed something which was technologically ahead with time. AVG Antivirus provided me the same.Most opposed my move asking me to resort to Mcafee or Norton, which i refused.Way back then and till date , this program is a real fortress for any PC from viruses. Never had a virus infection with AVG on my PC . This is another good freeware antivirus program.It has most of the features of a standard antivirus package like resident shield,email scanner for Outlook and Outlook express besides any other email clients,virus vault,etc. Updates, both program and virus signature files are free.Updates are also automatic and signature updates are of small size (in kbs). Besides it is also low on your system memory, unlike other antivirus packages which simply drain your memory. However support is right now not available for the free version of the software, its only for the paid version. You can however buy support for a limited period.Check on their website.You can almost sleep peacefully with AVG installed on your PC. Even paid programs like Norton, Mcafee simply cannot get anyway near this strong and simple freeware antivirus program. Just check for yourself, you will be amazed.