Avast support Antivirus is a computer security application, which provides protection against a range of potential threats, including viruses, spyware, malware and ransomware. It is currently recognised as the most popular antivirus program on the market and the free version of the software is suitable for personal and home use. Not only is it safe to use the software, doing so will make a computer safer to use in general, because Avast will protect it from viruses and other threats that could potentially cause damage. Although the software is classed as being an antivirus application, it is able to protect against, detect and remove viruses, spyware, malware, trojan horses, worms, ransomware and many other security threats. In addition to the Windows application, the software is also available on the iOS, Android and Mac platforms.