+ 1 Votes take your pick of any of these free versions PurpleSkys Moderator February 17, 2013 at 7:58pm PST Avast free for home http://www.avast.com/en-ca/free-antivirus-download AVG free http://free.avg.com/ca-en/free-antivirus-download Avira http://free.avg.com/ca-en/free-antivirus-download Bitdefender http://www.bitdefender.com/solutions/free.html There are others out there, but that's four I know best. + 0 Votes Unthreat sarahmsarah February 25, 2013 at 6:34pm PST I recommend you try Unthreat Antivirus, it's surprisingly light on the system and seems to find all the threats on my computer without slowing it down. It's a free antivirus and doesn't have any of those annoying popups. + 0 Votes Top Security Suites dmiles February 18, 2013 at 9:57am PST PC World just did an article in there March Issue for Top Security Suite 1) F-Secure expensive 2) Norton Internet Security 3) Trend Micro Titanium 4) Bit Defender 5) Kaspersky Others listed not in order were McAfee and AVG + 0 Votes Comodo Internet Security SabrinaS-e160e February 18, 2013 at 1:03pm PST I would suggest you to go with Comodo Internet Security! This has many features enabled in a single software, For details about it you can visit here .. http://www.comodo.com/home/internet-security/free-internet-security.php + 0 Votes Looking for a new anti-virus software entropypawsed February 18, 2013 at 11:56pm PST If you are using Windows, virtually any version, then Microsoft Security Essentials is the way to go. It is free, easy on system resources, and quite good! If you are using Linux, then you probably do not need anything:-) Good Luck + 0 Votes Microsoft Security Essentials Alec Lerg February 19, 2013 at 4:36am PST I am using Microsoft Security Essentials along with Spybot Search and Destroy, both are free and you can download them from ninite.com. You can also find other options there and useful software you may want to use. SSD is a spyware remover, so don't worry about having two antivirus running on the PC, because SSD is not. + 0 Votes Trend Micro Worry Free Business Security ramonramirezg February 19, 2013 at 6:57am PST I like pretty much Trend Micro Titanium, been with Trend Micro for as long as 8 years and always detected malware and stuff... you can try with free solutions like Security Essentials and recently, I??ve tried Fortinet Lite which was a surprise since I never imagined that it could work as nice it is working for me right now. + 0 Votes Another vote for comodo Madsmaddad February 19, 2013 at 5:03pm PST My Vipre AV is just expiring, and they want + 0 Votes Yeah, but ... stupid username2012 February 19, 2013 at 5:32pm PST Easy to use, nice and light on resources, works for me ... All nice, but how can we know whether they do the job? It's like buying car insurance ... we all look for the lowest price, but it's only when we come to claim that we find out what we really bought. Ditto backing up your data ... it's only when you try to restore that you find out whether you've been wasting your time. + 0 Votes Unthreat sarahmsarah February 25, 2013 at 6:34pm PST I recommend you try Unthreat Antivirus, it's surprisingly light on the system and seems to find all the threats on my computer without slowing it down. It's a free antivirus and doesn't have any of those annoying popups.