All software tools
CMI Version Checker
AutoCAD · Civil 3D · Revit
Tells you which software version any file was saved in. You can check a single file or process entire folders at once, filter by file type, and export results, handy any time you're receiving files from outside your team and need to confirm compatibility before opening them.
Included free with an active Autodesk subscription through CAD Masters.
Get it on the App Store