TERISOLIR

Avast! antivirus is an anti-virus program developed by ALWIL Software based in Prague, Czech Republic, first released in 1988. Avast! was one of the first on-access antivirus programs to be released for Windows x64 edition. Avast! 4 Home is a popular full-featured freeware anti-virus applications available to Microsoft Windows and Linux users. As of October 2008 the free Home Edition has had over 32 million downloads on Download.com.[2] As of March 7, 2008 Avast! (Home version) has had 60 million registered users.[3]

Avast! is aimed at preventing several types of computer threats, including those that are not technically computer viruses such as spyware and even rogue anti-spyware, and can also make a virus Recovery DataBase which is used to recover files when they are infected (instead of deleting them). The program is available with text and voice translations for 27 languages.