It is second new software I am testing, before formatting, I was searching for wireless signal indicator, but found only this toolbar. It is also quite good, you can select your network interface, if you have more then one, it also logs some info, so you can see how much you downloaded/uploaded this month. You can change units to your liking. HERE is official download link.
Recently I thought about updating my software in laptop, so why not before formatting, to install some new software for a test. One which I found quite useful, was a bar which shows remaining battery and some extra info on mouse over. You could say that it is useless and really not a good find, since there are plenty of gadgets. The gadgets are good think, but the problem is that they are visible only on desktop. There are also systray icons, but they mostly will take one space and will show info only on mouse over. But this will show info always, since this is a toolbar. If you are interested HERE is official download link. It also works on Windows 7 x64