| File Extension: | PQO |
| File Type Description: | PhreeqcI Data |
| File Type Developer: | USGS (United States Geological Survey) |
| Primary Associated Software: | PhreeqcI |
| Primary Software Developer: | USGS (United States Geological Survey) |
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USGS (United States Geological Survey) developed the PhreeqcI Data file type when the PhreeqcI was initially released. Data from our web servers (annonymous users) show that PQO files are most popular in United States and are often used by Windows 10. Google Chrome is the predominant internet browser used by this population.
 | PhreeqcI by USGS (United States Geological Survey) |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .GKS | USGS (United States Geological Survey) | Vector Image Files | Graphics Kernel System File |
| .NAM | Aqua-3D | Data Files | Aqua3D Network File |
| .CUB | Microsoft Corporation | Data Files | Analysis Services Cube File |
| .ABU | ASUS | Backup Files | Asus App Backup File |
| .GDP | Open Source | Data Files | Scrolling Game Development Kit Project |
| .86V | Texas Instruments, Inc. | Data Files | TI-86 File |
| .DNC | Microsoft Corporation | Video Files | Windows Dancer File |
| .NMW | Microsoft Corporation | Data Files | Microsoft NetMeeting T126_Whiteboard File Format |
| .GGI | The GGI Project | Data Files | General Graphics Interface File |
| .MEM | Microsoft Corporation | Backup Files | FoxPro Variable File |
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