The interface is generally responsive, except for the Scan menu, which lagged for over twenty seconds every time I clicked it.

It even lets you pick the colors for the gradient. Its only touch of visual flair is a gradient bar displayed behind each item on the list, showing the relative amount of space that item occupies. TreeSize opts for a more utilitarian approach, arranging folders as a list sorted by size. SpaceSniffer visualizes disk space using something called a treemap, which is a grid of nested rectangles of varying sizes reflecting folder or file size. While scanning time is comparable, TreeSize and SpaceSniffer use very different interfaces. Free competitor SpaceSniffer took roughly the same amount of time to scan the same drive. It took about a minute to scan a 465GB drive with 207GB of occupied space spread across 195,000 files. Once you’re in the application, just pick a drive to scan, and let TreeSize do its thing. For this reason, it launchers under an Administrator account by default.

To compile an accurate report, TreeSize Free must have access to all files on the drive you’re scanning. You don’t even have to install it if you don’t want to: Maker JAM Software offers an official portable version at the company website. TreeSize Free 2.7 shows drive contents as a list sorted by size, with simple and clear bars indicating relative size.TreeSize Free is as straightforward as software comes.

I may not have much advice on de-cluttering your house, but if it’s your hard drive space you’re looking to reclaim, TreeSize Free can provide you with the answers you need. Then, a few months or years go by, and you find yourself surrounded by random clutter, wondering where all that free space went. Getting a new computer is a bit like moving into a new house: At first, there’s plenty of room for everything.

Tree size disk