If you know at least a minimum of computer security, you must be aware that antivirus are a major part of keeping your computer protected from malicious threats, and you must also know that big name antivirus makers usually charge absurd fees for programs which are usually not completely secure. Clamwin.
com offers an open-source alternative, which means that not only is it free, but also that any user with moderate programming knowledge can create modifications of the program to make it more secure. And if that doesn’t convince you, one quick look through the exquisitely designed site will, with its tons of information and lots of helpful links. So don’t gamble on your computer’s security, visit this site and learn about the open source antivirus that is Clamwin. 
