Avast Software

Avast Software (stylized as avast!) /əˈvɑːst, -æst/ is a Czech security software company headquartered in Prague, Czech Republic, that develops antivirus software and internet security services. Avast holds the biggest share of the market for antivirus applications and its portfolio includes a wider array of security-related products targeting both consumer and corporate markets, such as Avast Antivirus, Avast SecureLine (virtual private network) and Android app Avast Antivirus & Security with over 100 million users on Google Play.