Having access to the web and email is great, but what if you need to work? Fortunately, it's possible to install a full copy of Openoffice, which has features similar to those found in Microsoft Office, on to a memory key and is free. Openoffice is a large program, and takes up around 190MB of space on a memory key, but it's also very powerful. It can be downloaded from the Portable Apps website at.

Installing Openoffice is even easier than Firefox and Thunderbird, as there's no licence to accept - simply select the memory key when asked for the destination folder. Once this is selected, wait a few minutes for all the program to be copied to the memory key - the process takes a while.

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Sadly, you'll notice the same kind of sluggishness when using the portable version of Openoffice. In particular, there's a noticeable lag between clicking on a menu and watching it open. It's still an extremely useful way to carry a complete word processor and spreadsheet in your pocket, but we wouldn't recommend using it for day-to-day work.