| 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 |
|---|---|---|---|
| .CUB | Microsoft Corporation | Data Files | Analysis Services Cube File |
| .NAM | Aqua-3D | Data Files | Aqua3D Network File |
| .GKS | USGS (United States Geological Survey) | Vector Image Files | Graphics Kernel System File |
| .D06 | Cadence Design Systems | Data Files | MicroSim PCBoard NC Drill Data File |
| .AIV | EllaZ Systems | Data Files | AIVault Data File |
| .ZID | Open Source | Data Files | Zoo/PhytoImage Data File |
| .LDF | Microsoft Corporation | Data Files | SQL Server Transaction Log File |
| .A3M | Adobe Systems Incorporated | Data Files | Authorware 3 Macintosh File |
| .CL3 | Roxio | Data Files | Easy CD Creator CD Layout |
| .BL7 | Ellis Enterprises | Data Files | Bible Library 7 Project Package |
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