ESD is a document file that stores survey project that can be printed or exported to electronic version. ESD files are created by ExpertScan NetE-nable software developed by Autodata Systems. ExpertScan NetE-nable is an advanced software tool for creating and analyzing surveys.

Interesting feature of ESD files is the option to print their contents on paper and convert filled survey cards back to digital form for further processing. ESD files are only supported on Windows 7 or higher.