To get more information about this program, refer to its official website. Importantly, it can be used in multiple platforms such as Windows, Mac, Android, iPad & iPhone and loT. It also offers various services including computer security, firewall, anti-phishing, browser security, antispyware, anti-spam and more. It has been around a long time, helping you to protect against many threats from the local files, instant messages, emails, internet, P2P connections, etc. Simply put, Avast is one of the best free antivirus programs on the market that you can download it for use. Useful Methods to Protect Your PC Against Virus and Malware.How to Disable Avast Free Antivirus in Windows 10/8/7.