QuickTime installer cache
File type: Temporary file
A qdat file extension is related to the Apple QuickTime. A qdat file contains installer cache.
Found 2 different file type records with the same qdat filename suffix.
File type category:
Temporary file
Date updated: September 1, 2017
The qdat file extension is associated with the QuickTime, a multimedia framework for Microsoft Windows, Apple macOS (OS X) operating systems, developed by Apple.
The qdat file stores installer cache.
Software apps that create qdat files:
Microsoft Windows
Software applications that handle other tasks involving qdat files:
Microsoft Windows
File type category:
Miscellaneous file
Date updated: September 22, 2026
The qdat file format is associated with KaleidaGraph by Synergy Software. A qdat file contains the tabular data used in a KaleidaGraph worksheet, including data that can be analyzed and plotted.
KaleidaGraph is available for Apple macOS, including the older Mac OS X platform. The qdat format is a native KaleidaGraph data format rather than a general-purpose spreadsheet format.
Open the qdat file in KaleidaGraph on Apple macOS. Use KaleidaGraph's Open command and select the file; the application should load the worksheet data for viewing and analysis.
Other applications may not interpret the native qdat structure correctly, so a compatible version of KaleidaGraph is normally required.
Open the qdat file in KaleidaGraph and export or save its worksheet data in a text-based format supported by the installed version, such as a tab-delimited data file. The exported data can then be imported into a spreadsheet or another analysis application.
Converting the qdat file outside KaleidaGraph may lose KaleidaGraph-specific worksheet information, calculations, or analysis settings.
Software applications that handle other tasks involving qdat files:
Apple macOS / Mac OS X
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