I have been using Evernote? http://evernote.com/??as a testing tool recently. It works out quite well. You can save snippets, pictures of testing, problems, tables of data etc...?
It makes it very easy to organise your testing notes by giving you different notebooks (you can seperate projects by notebooks) and then you can tag notes (you could tag these by however you work, ie job number, iteration number, feature). You can also share the notebooks with others so if there's a group of people involved in your testing you can add notes together.?
Very useful :-)