Adi extension is related to AutoCAD Device-Independent Binary Plotter File. You can open adi files with Autocad software.

Adi extension stands for Plotter File.  These files are generated by a technical drawing software called AutoCAD. You may find black and white drawings in adi format. Generally, these files are used for printing process with the plotter devices. 
There is chance to get detailed information about Autocad program. In this case, please take a look to following web page.

What to use adi

Autocad or alternative free softwares

which page related to adi file

adi Related Searches

You can check related links about adi fileextension.