Personally I use Folder Express, found here: http://www.changefolder.com/

I also once used Doc Commander (http://www.utilityplanet.com/), but it seems as though devleopment has ceased there.

I purchased Actual Window Manager about 4 months ago. It is a great, reliable app. Be careful if you do decide to purchase it as I had to get the author to guaruntee me updates for 6 months. Their policy for software upgrades are, if you buy at version 3.6 and the next major version is 4.0 (three months later), there is an upgrade fee. I find this to be unforgivable with software developers. The nice thing for Actual Tools software is that I am allowed to use a copy on my main PC, HTPC and my laptop (it's like the license for ONE USER approach, which is the way it should be for people who have many PC's they use). I was a former customer of Calendarscope (among other softwares), which wanted an upgrade fee every year, but they rarely do much in the way of consistent development, so I said no thanks.