October 3, 2010
There are many free programs as well as many virus's pretending to be anti-virus.
Here is a list of the top, free, legal, safe anti virus programs.
AVG (free) 10
Avira personal edition
Microsofts Security essentials: It is supposed to be a good produt, but if you read the acceptance part, it says they will look at your hard drive and send whatever info they want about YOU to M$, without asking.(If thats ok with you, feel free to download and use it.) Also, M$ just introduced a "small business version" covering several servers and up to between 50-79 client computers.
Also available, but not the best is:
PC Tools antivirus
Rising anti virus.
No, this is not all of them, just a taste of the best free ones (no trial's)
July 8, 2020
In my opinion, antiviruses are useless because if you are an advanced user you won't have any viruses in your system it's better to install a cleaner. They will delete everything which is considered to be harmful or unnecessary. Check this article if you want to find the best pc optimization software for yourself. On this site, there are described a lot of cleaners their advantages and disadvantages. Some of them are free to download so don't worry about the price.
December 13, 2014
November 17, 2016
In my opinion, the only TRUE free anti-virus program is Linux. It's an operating system based upon Unix and it's been considered industrial strength with it's built in firewall and the anti-virus protection is top notch. When you've got an open source operating system with 1000s of programmers and testers, updates are frequent and rock solid.
you can't beat linux or any of its derivatives such as ubuntu, linux mint (the version I use with the Cinnamon desktop environment), SUSE, on and on.
go to distrowatch.com and read about all the versions available to us.
but be warned, linux is NOT compatible with Microsoft Windows out of the box. You need to use WINE and perhaps Crossover to use some Windows software.
But give it a chance and I think you'll be very pleased.
Linux = Freedom