StepTree 1.8.1.702 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The most popular versions among StepTree users are 1.8 and 1.6.
We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The actual developer of the free program is TibSoft. The program's installer files are generally known as steptree deutsch.exe or steptree.exe etc. StepTree is included in System Utilities.
From the developer:
StepTree is a 3D file system visualizer. It draws on ideas from the last 15 or so years of research on a type of space filling visualization called Tree-Maps (first introduced in the early nineties by Ben Shneiderman). StepTree is basically a Tree-Map extended into three dimensions where the size of files and directories is mapped to area in the visualization.
You may want to check out more software, such as RegSweep, Clean Disk 2003 or NuLOOQ navigator, which might be similar to StepTree.