Opera 10 browser was released some time back, and it was claimed to be the best release from Opera. And the version released was for the installer file to be used in computer.
Now the portable app makers have made the USB version of the Opera 10 browser, which comes as Opera@USB. Portable app is a software which does not require any installation and can be used directly from the USB flash drive. It comes handy when you are using your friends computer and want to have all your passwords etc. in the browser, which you don’t want to share with your friend.
The Opera 10 portable browser also has the same features of the main browser but the only difference, is that its not the installer version, and can be used anywhere from the flash drive.
There is an English, international and german version of the browser to choose from during downloading.
A couple other portable browsers worth downloading are Portable Google Chrome and portable avant browser.