Rizone Virus Cleaner is a free portable utility for cleaning viruses, malware and spyware from your computer permanently. It has a fast scanning engine and can detect over 300000 unwanted files. The best feature of this tool is its portability. This means that you can carry it around with you on a USB memory stick and use it wherever and whenever you want. Also, use it together with your favourite Anti-Virus program for extra security.