If the DAT file is a video, you can open it with its associated video app. However, if you aren't sure what app it's intended for, VLC Media Player should be able to open it as well.

If you have a .DAT data file of unknown origin, your best bet is to open it with a text editor before you try anything else. There may be clues to its program of origin in the text.

Spread the loveOpening a DAT file on a Mac can be a little challenging if you’re not familiar with the process. But fear not, we’ve broken it down into 13 easy-to-follow steps to help you open a DAT ...