| File Extension: | GPT |
| File Type Description: | Gerber Top Pad Master Data |
| File Type Developer: | Gerber Technology |
| Primary Associated Software: | Altium Designer |
| Primary Software Developer: | Altium |
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Altium developed the GPT file extension, also know as a Gerber Top Pad Master Data file, for the Altium Designer software package. Annoymous user data statistics infer that GPT files are most popular in China and with those using Windows 10 devices. Most of these users are running the Google Chrome web browser.
 | Altium Designer by Altium |
 | MOPAC by James Stewart |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
 | Linux |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .CPA | Zuken | CAD Files | CADSTAR PCB Archive File |
| .DRL | Gerber Technology | Data Files | Gerber Drill Rack File |
| .GM1 | New World Computing | Game Files | Heroes Of Might & Magic III Saved Game |
| .SCHDOC | Altium | Uncommon Files | Altium Designer File |
| .GTS | Ucamco | Data Files | Gerber Top Solder Mask Data File |
| .GDD | Altium | 3D Image Files | Gerber Drill Drawing Data |
| .PCB | Autodesk, Inc. | Data Files | Printed Circuit Board Design File |
| .GTO | Quicken | Data Files | Quicken Online Data File |
| .ROU | Gerber Technology | Data Files | Gerber Route File |
| .DEI | Open Source | Data Files | Gerber Design Engineered Interface |
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