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.

It's a straightforward website that lets you upload and open DAT files without needing to sign up or provide an email. Simply drag and drop your file into the box. Keep in mind there's a 50MB file ...

Converting RPT files to PDF files lets you present important business data in a highly portable format. The Crystal Reports application creates one type of RPT file, which only Crystal Reports ...