"OperaUSB" which can be carried in a USB memory

Installation is unnecessary, you can carry the web browser Opera in a USB memory. It is a portable Opera. Approximately 7 MB of free space is OK.

Download from below. There is Japanese version, too.
OperaUSB == download - extract - use ==
http://www.opera-usb.com/operausben.htm

The latest version corresponds to Ver. 9. The Japanese version is from the following.
http://www.opera-usb.com/operausbas.htm

Unfortunately the Japanese version is still Ver 8.54. Among them, it will be Ver9.