| File Extension: | 1M |
| File Type Description: | Cygwin Main Data |
| File Type Developer: | Red Hat |
| Primary Associated Software: | Cygwin |
| Primary Software Developer: | Open Source |
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Cygwin Main Data files are the most popular type of files to carry the 1M file extension, originally developed by Open Source for Cygwin. Our data shows that 1M files are frequently utilized by PC users in Japan and popular on the Windows 10 platform. A high percentage of these users browse the web using Google Chrome.
 | Cygwin by Open Source |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .MAG | Microsoft Corporation | Uncommon Files | Access Diagram Shortcut File |
| .MRF | Apple | Font Files | Macintosh Font File |
| .MP41 | Microsoft Corporation | Video Files | Microsoft MP41 Video Data |
| .PL1 | Broderbund | Graphic Files | 3D Home Architect Room Plan |
| .MO | Dassault Systèmes | Data Files | Dymola Simulation File |
| .S3M | FMJ-Software | Audio Files | S3M |
| .WK! | IBM | Spreadsheet Files | Lotus 1-2-3 Spreadsheet |
| .XSF | Microsoft Corporation | Data Files | InfoPath Form Definition File |
| .JPQ | Open Source | Compressed Files | JPQ (Jared Package) Library Archive |
| .M4S | Ubisoft | Game Files | Myst IV: Revelation Save Game File |
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