WinRAR is an archiving utility that completely supports RAR and ZIP archives and is able to unpack CAB, ARJ, LZH, TAR, GZ, ACE, UUE, BZ2, JAR, ISO, 7Z, Z archives. It consistently makes smaller archives than the competition, saving disk space and transmission costs.
WinRAR offers a graphic interactive interface utilizing mouse and menus as well as the command line interface. WinRAR is easy to use

AVG Anti-Virus Free Edition is trusted antivirus and antispyware protection for Windows available to download for free. The new included LinkScanner® Active Surf-Shield checks web pages for threats at the only time that matters - when you're about to click that link.
AVG Anti-Virus Free has these following features:
* Real-time safe internet surfing and searching
* Quality proven by 80 million of users
Etc...

1. SmaRTP Technology, SMART-Protection
    * Protection of the world's lightest, fastest and least use computer resource.
    * Does not only depend on the number of databases / signatures, but also has much intelligence (intelligent algorithms) that can protect computers from new viruses though.
    * Supports all OS Windows XP & Vista