Best Free Software for Windows

Anti-Virus Software

Avira AntiVir PersonalEdition Classic -a free of charge PC basis protection. It protects against viruses, worms and Trojans, expensive dialers and phishing, detects and deletes rootkits.;

AVG AVG is the most popular free solution available at no cost to home users and provides the high level of detection capability that millions of users around the world trust to protect their computers. It is easy to use, has low system resources. Among other features are real-time protection as files are opened and programs are run, and AVG’s Virus Vault for the safe handling of infected files. AVG Anti-Virus is only available for single computer use for home and non commercial use.

BitDefender - one of the world's most effective antivirus engines for free! BitDefender Edition uses the same ICSA Labs certified scanning engines found in other BitDefender products, allowing you to enjoy basic virus protection for no cost at all. Powerful scan engines ensure detection and removal of all viruses in the wild every time you need it.

avast! - avast! Home Edition is a full-featured antivirus package designed exclusively for home users and non-commercial use.