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What are SDEF files and how to open them

Are you having problems opening a SDEF file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a SDEF file?

A .SDEF file is a Scripting Definition file.

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open SDEF files

Important: Different programs may use files with the SDEF file extension for different purposes, so unless you are sure which format your SDEF file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested two different SDEF openers which you will find listed below.

Last updated: March 28, 2012

Various apps that use files with this extension

These apps are known to open certain types of SDEF files. Remember, different programs may use SDEF files for different purposes, so you may need to try out a few of them to be able to open your specific file.

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Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about SDEF file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.