File Extension def

Find out what programs can help open, view, play or convert your def files.

Opening def files
SmartWare II Data File

Did your computer fail to open a def file? We explain what def files are and recommend software that we know can open or convert your def files.

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What is def file?

Spreadsheet and database format used by SmartWare II database software

Software that will open, convert or fix def files

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