3DOSX

3DOSX is a fully functional, 3D file system browser. It allows you to open multiple folder and disk hierarchies and move about them in three dimensions.

Almost everything you do in the finder can be done in the same way using 3DOSX. (To open a file or expand a folder, double-click it. To Get Info, hit Command-I.) As you browse your file system, folders will expand into “platters” containing all items within that folder. To scroll through a large list of items, click and hold on the platter and move your mouse to the left or right. If the platter is not big enough to display every item, it hides some of them in a “magic box” in back. As you scroll, items will disappear into the magic box and reappear as you scroll in the other direction.

To switch focus to a different platter, just click on it. The "w" and "s" keys will let you look above or underneath the current platter. 

Here are the common keys you can try:

To move the camera-
  w
a s d

To navigate with the keyboard entirely:
Use arrow keys.

Features:

New in 1.1.1 (Mar. 14, 2002):
Fixed memory leak that manifested as Platter menu bug
Fixed bug with Help menu not working
Added shift-click selection
Added menu items for 3DOSX Forum and Bug Report in Help menu

New in 1.1 (Mar. 08, 2002):
Labels!
Scroll wheel and contextual menu support
Move to Trash
Theme support
Screensaver mode
Adjustable screen size

Version 1.0 (Feb. 29, 2002):
Cut, copy, and paste files and folders
Get Info with type/creator code support
Eject mounted items
Customizable colors for folders, representing OS X permissions
Ability to show/hide invisible files
Unique “Aqua” interface

Version: 1.1
Last Update: Mar. 08, 2002

3DOSX ©2002 MacWarriors –- http://www.acm.uiuc.edu/macwarriors

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.