| .CHM | Microsoft Corporation | Plik Web | Compiled HTML Help File | SWAT | Grassland, Soil and Water Research Laboratory |
| .CST | Smith Micro Software | Pliki z szatami graficznymi | Manga Studio Story File | SWAT | Grassland, Soil and Water Research Laboratory |
| .DAT | Unknown Developer | Pliki gier | Game Data | SWAT | Grassland, Soil and Water Research Laboratory |
| .FIG | Open Source | Pliki z grafiką wektorową | Xfig Drawing | SWAT | Grassland, Soil and Water Research Laboratory |
| .GW | Grassland, Soil and Water Research Laboratory | Pliki z danymi | SWAT Groundwater Input Data | SWAT | Grassland, Soil and Water Research Laboratory |
| .PCP | Microsoft Corporation | Pliki wydawcy | Windows Installer Patch Creation Properties File | SWAT | Grassland, Soil and Water Research Laboratory |
| .PET | Larry Short, Mick Amadio and Puppy community | Pliki skompresowane | Puppy Linux Install Package | SWAT | Grassland, Soil and Water Research Laboratory |
| .RCH | Grassland, Soil and Water Research Laboratory | Pliki z danymi | SWAT Reach Output File | SWAT | Grassland, Soil and Water Research Laboratory |
| .RTE | Autodesk, Inc. | Pliki z danymi | Revit Project Template | SWAT | Grassland, Soil and Water Research Laboratory |
| .SBS | Allegorithmic | Pliki konfiguracyjne | Substance Package | SWAT | Grassland, Soil and Water Research Laboratory |
| .SEP | PictView software | Pliki z grafiką rasterową | Separated Image File | SWAT | Grassland, Soil and Water Research Laboratory |
| .TMP | Mozilla | Pliki kopii zapasowej | General Temporary File | SWAT | Grassland, Soil and Water Research Laboratory |
| .WGN | Grassland, Soil and Water Research Laboratory | Pliki z danymi | SWAT Weather Generator Input | SWAT | Grassland, Soil and Water Research Laboratory |
| .WUS | WUSSOFT | Pliki audio | WUTG Tagged Audio File | SWAT | Grassland, Soil and Water Research Laboratory |
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