| File Extension: | ESR |
| File Type Description: | 4D Database External Data |
| File Type Developer: | 4D, Inc |
| Primary Associated Software: | 4D |
| Primary Software Developer: | 4D, Inc |
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4D, Inc developed the 4D Database External Data file type when the 4D was initially released. According to our internal data, 4D Database External Data files are most popular with users in China, with a majority of them running Windows 10. A high percentage of these users browse the web using Google Chrome.
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
 | Android |
 | Linux |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .4QR | 4D, Inc | Text Files | 4th Dimension Database Windows Quick Report |
| .4FI | 4D, Inc | Developer Files | 4th Dimension Insider File |
| .4DD | 4D, Inc | Database Files | 4th Dimension Database Data File |
| .TFR | LucasArts Entertainment Company, LLC | Game Files | TIE Fighter Pilot File |
| .4W7 | 4D, Inc | Data Files | 4D Write Document |
| .4DS | 4D, Inc | Data Files | 4th Dimension Database Windows Data Segment |
| .4DA | 4D, Inc | Database Files | 4th Dimension Database Data File |
| .REX | Propellerhead | Audio Files | ReCycle Loop File |
| .4ST | 4D, Inc | Database Files | 4th Dimension Database Data File |
| .4VR | 4D, Inc | Data Files | 4th Dimension Database Windows Saved Variable |
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