How to open Autodesk AutoCAD autosave file .$ac files
Have you had trouble opening the $ac file on your computer? What are $ac files? We explain what they are and recommend software that we know will open them.
What is $ac file?
An $ac file extension is related to the Autodesk AutoCAD modeling utility. An $ac file stores CAD drawing saved by the autosave function.
Autodesk AutoCAD autosave file description
The $ac file extension is associated with Autodesk AutoCAD, a popular CAD modeling software for Windows and Mac.
The $ac file contains autosaved CAD drawing. It is used as a backup of AutoCAD project against application, or computer crash. After the project is finally saved by user, the autosave file will be deleted.
Suggested software to open $ac file

AutoCAD
Leading 2D and 3D CAD development software from Autodesk

AutoCAD for Mac
A Mac version of popular Autodesk AutoCAD software
There are other $AC filename extensions with the same .$ac suffix
$ac - $&Sense data
An $ac file extension is related to the $&Sense an accounting software. An $ac file stores data.