ThreeDify Excel Grapher is a Office Tools software developed by ThreeDify Incorporated. After our trial and test, the software is proved to be official, secure and free. Here is the official description for ThreeDify Excel Grapher:

Marydown Editor: Deployed as a 3D add-in for Microsoft ®Excel ®, ThreeDify Excel Grapher makes creating Excel xyz charts and graphs from raw data as easy as highlighting a range of cells in a worksheet. With a few mouse clicks, users can easily create a wide range of X-Y-Z scatter graphs, line graphs, 3D voxel and Bar Charts, surfaces (TIN and gridded meshes), or water-tight solids. In addition, Grapher makes multi-variant 4D data visualization possible directly within Excel and is the only truly 3D graphing tool that's completely integrated with MS Excel. Grapher runs completely inside the familiar Excel interface and the 3D graphs it creates are saved as part of the Excel worksheet. That means there's no need to run a separate application and there are no external files or additional file formats to manage.

ThreeDify Excel Grapher features the following functionality:
* Plot multiple graph series inside Excel directly from user-specified cell ranges within MS Excel
* Easily specify X, Y, Z cell ranges to plot with mouse or keyboard selection. The specified cell ranges do not have to be of same dimension or size. They will be auto-resized.
* Ability to interpolate or assign values to empty cells
* Ability to set scales of coordinate axes;
* Ability to Zoom, Pan and Spin (with an Arcball interface) the graphs;
* Support for different plot styles for each graph series;
* Support for cartesian, polar(cylindrical) and spherical coordinates;
* Support for color-interval rendering mode
* Powerful real-time data tracking capability
* High quality image and animation export to AVI format.