What is Antivirus software?
When there is a computer virus, there got to be Antivirus which is nothing but a software used to protect an operating system from viruses. There are several companies providing Antivirus software which are available for download as free and paid versions. The free version provides basic protection from Virus whereas the paid versions usually provide additional options to protect from other threats, such as spyware or adware.
Types of antivirus software
There are some of the companies which provide the antivirus for free as well as paid version. Some of the companies which provide the best antivirus software for free are Avira, AVG, Avast, Comodo etc. There are famous companies that offer a paid version of the best antivirus software are McAfee antivirus, Trend Micro, Kaspersky antivirus, Norton AntiVirus etc.
Once you download a free version or purchased a paid version of antivirus then you have to install the antivirus software in your PC so that it will be protected against the virus.