i want free anti-virus software which is totally free for unlimited period and reliable.?

Question

anti-virus should be open source with regular live update and compatible with windows xp. size should not be more than 6 mb.

Answer 1

Here you have some good options:
http://askcomputerexpert.ws43.com/download/security.htm

Answer 2

"There are two equal recommendations in this category. First there is AVG Antivirus 7 Free Edition. This product [1] has been continuously refined since it was first released in 1991 and the recently released V7.5 makes further improvements to an already solid product. Additionally, it's relatively small, light on resources, has regular automatic updates and handles email scanning. There is a free and a pro version, the only difference being that the free version has a few non-critical features disabled and has no direct technical support.

"Equally effective is the free Avast! scanner [2] though its funky media player style interface is not to everyone's taste. Avast! also required periodic re-registration while AVG does not. However Avast! does not seem to suffer the signature file update problems that plague some AVG users."

From Gizmo Richard's Tech Support Alert

Answer 3

Definitely Avast. They have versions for home and professional use. And you have the choice of downloading it free or paying for it. I don't know what the difference is since I only use the free home edition.

They have anti-virus software for Win95, 98, 2000, ME and XP. The software knocks out viruses, trojans and worms. All you have to do when one is found is move it to the Treasure Chest and delete from there.

You will need to register it after downloading. Then renew the registration every 2 years. But it's the best I've come across.

Answer 4

All of these are ones that I personally use and all are free.

AVG Removes I-Worm/Stration · BackDoor.Generic3.GBB and .GBC · Worm/Generic.FX · Exploit.WMF
http://free.grisoft.com/doc/5390/lng/us/tpl/v5

Spybot - Search & Destroy detects and removes spyware, a relatively new kind of threat not yet covered by common anti-virus applications. Spyware silently tracks your surfing behaviour to create a marketing profile for you that is transmitted without your knowledge to the compilers and sold to advertising companies. If you see new toolbars in your Internet Explorer that you haven't intentionally installed, if your browser crashes inexplicably, or if your home page has been "hijacked" (or changed without your knowledge), your computer is most probably infected with spyware. Even if you don't see the symptoms, your computer may be infected, because more and more spyware is emerging. Spybot-S&D is free, so there's no harm giving it a try to see if something has invaded your computer.
http://www.safer-networking.org/

http://superantispyware.com/
SUPERAntiSpyware is the most thorough scanner on the market. Our Multi-Dimensional Scanning and Process Interrogation Technology will detect spyware that other products miss! SUPERAntiSpyware will remove ALL the Spyware, NOT just the easy ones!
Easily remove over 100,000 pests such as SmitFraud, Vundo, WinFixer, SpyAxe, SpyFalcon, WinAntiVirus, AntiVermins and thousands more!
Make sure after you download any of these, that you update them.

*Be sure to come back to Yahoo Q&A and vote for one of the answers as best answer!

Answer 5

There is no free anti-virus software which is totally reliable. Infact not even paid anti-virus softwares are totally reliable. Get hold of Avant. Its free with regular updates. But I wont vouch for it to be a reliable anti-virus software.

Answer 6

Personally, I use the AOL AntiVirusShield. Don't let the name AOL scare you. AntiVirusShield is made by Kaspersky which is one of top-rated anti-virus vendors in the world.

In recent tests, the most popular free anti-virus, AVG, was only able to detect about 82% of a very large sample of viruses. On the other hand, AntiVirusShield was able to detect better than 99% in the same test.
http://www.virus.gr/english/fullxml/default.asp?id=82&mnu=82

AOL AntiVirusShield has excellent virus detection rates and is extremely light (5MB RAM on my machine) on using your computer resources.

Free to anyone, AOL member or not from:
http://www.activevirusshield.com/antivirus/freeav/index.adp?

Answer 7

I am not sure if you definately NEED open source, if not try AVG and find the free version, I have put the link to the site below. It works good and is free. It does do Live Update also. Hope this helps

http://free.grisoft.com/freeweb.php/doc/2

Answer 8

in case you pick a unfastened anti-virus i choose to propose so as of popularity, yet please pick the the final option one for you (installation in basic terms one): one million. AVG unfastened a. an undemanding interface (much less complicated to apply than Avast! and Avira) b. Can stumble on approximately 80 two.80 two% of viruses Cons: low virus detection 2. Avast! a. actual-time protection b. It has an option to delete a pandemic as quickly as got here across c. Can stumble on approximately 87.40 six% of viruses. Cons: Too many icons and sophisticated person interface 3. Avira AntiVir a. it may stumble on malware greater advantageous than Avast and AVG b. this is stunning umbrella icon c. Can stumble on approximately ninety 4.26% of viruses Cons: an rather gradual replace in case you in addition to mght choose unfastened anti-spyware and that i could propose getting SUPERAntiSpyware and Malwarebytes.

Answer 9

I can give a few links that offer free virus and spyware removers...! Norton, AVG , Avast are free antivirus software. Ad-aware, Ewido are free spyware removers. You can download free softwares at
http://fixit.in/antivirus.html and http://fixit.in/spywareremover.html

Answer 10

This site has a pretty good list of anti-virus software,
http://www.basicspywaretips.com/getridofspyware.html

Answer 11

Avast. Totally free and frequently updated.