| .CHM | Microsoft Corporation | Webdateien | Compiled HTML Help File | SWAT | Grassland, Soil and Water Research Laboratory |
| .CST | Smith Micro Software | Seitenlayoutdateien | Manga Studio Story File | SWAT | Grassland, Soil and Water Research Laboratory |
| .DAT | Unknown Developer | Spieldateien | Game Data | SWAT | Grassland, Soil and Water Research Laboratory |
| .FIG | Open Source | Vektorbilddateien | Xfig Drawing | SWAT | Grassland, Soil and Water Research Laboratory |
| .GW | Grassland, Soil and Water Research Laboratory | Textdateien | SWAT Groundwater Input Data | SWAT | Grassland, Soil and Water Research Laboratory |
| .PCP | Microsoft Corporation | Entwicklerdateien | Windows Installer Patch Creation Properties File | SWAT | Grassland, Soil and Water Research Laboratory |
| .PET | Larry Short, Mick Amadio and Puppy community | Komprimierte Dateien | Puppy Linux Install Package | SWAT | Grassland, Soil and Water Research Laboratory |
| .RCH | Grassland, Soil and Water Research Laboratory | Textdateien | SWAT Reach Output File | SWAT | Grassland, Soil and Water Research Laboratory |
| .RTE | Autodesk, Inc. | Textdateien | Revit Project Template | SWAT | Grassland, Soil and Water Research Laboratory |
| .SBS | Allegorithmic | Einstellungsdateien | Substance Package | SWAT | Grassland, Soil and Water Research Laboratory |
| .SEP | PictView software | Rasterbilddateien | Separated Image File | SWAT | Grassland, Soil and Water Research Laboratory |
| .TMP | Mozilla | Backupdateien | General Temporary File | SWAT | Grassland, Soil and Water Research Laboratory |
| .WGN | Grassland, Soil and Water Research Laboratory | Textdateien | SWAT Weather Generator Input | SWAT | Grassland, Soil and Water Research Laboratory |
| .WUS | WUSSOFT | Audiodateien | WUTG Tagged Audio File | SWAT | Grassland, Soil and Water Research Laboratory |
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