| File Extension: | QAT |
| File Type Description: | Microsoft Office Quick Access Toolbar File |
| File Type Developer: | Microsoft Corporation |
| Primary Associated Software: | Microsoft Office |
| Primary Software Developer: | Microsoft Corporation |
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Microsoft Office Quick Access Toolbar File files were originally developed by Microsoft Corporation for the Microsoft Office software application. Our internal web tracking data indicates that Windows 10 operating system users, and those living in China, are the most likely to use Microsoft Office Quick Access Toolbar File files. Google Chrome is the predominant internet browser used by this population.
 | Microsoft Office by Microsoft Corporation |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .GRA | Microsoft Corporation | Data Files | Microsoft Graph File |
| .STE | Adobe Systems Incorporated | Settings Files | Dreamweaver Site Settings File |
| .OUT | Open Source | Executable Files | Compiled Executable File |
| .WTX | Stefan Hagel | Text Files | Text Document |
| .ODS | Oracle Corporation | Spreadsheet Files | OpenDocument Spreadsheet |
| .PPSM | Microsoft Corporation | Data Files | PowerPoint Open XML Macro-Enabled Slide Show |
| .PAC | NetScape | Web Files | Proxy Auto-Config File |
| .DPB | Susteen, Inc. | Backup Files | DataPilot Backup File |
| .PBM | Unknown Developer | Raster Image Files | Portable Bitmap Image |
| .CU | NVIDIA | Developer Files | CUDA Source Code File |
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