Qemu-Puppy, is a real great tool, you can install it on a USB-key and even boot a PC with it, or use it over any other operating system, so you can take your Linux Operating System with you, together with all your applications and your work, and just borrow a PC upload your applications and you environment, do your tasks, and then return the PC as if nothing has happened.

As you may see, it is a must have tool for those who travel, and like to travel light.

You have a word processor, and spread sheet, Internet browser, calculator, image editor (paint), calendar and IM client, in fact, all you may need.

If you want to download it and learn how to install it, check this page, it has all the info you may need.

Qemu Puppy