| .CHM | Microsoft Corporation | Web-Filer | Compiled HTML Help File | SWAT | Grassland, Soil and Water Research Laboratory |
| .CST | Smith Micro Software | Sideutformingsfiler | Manga Studio Story File | SWAT | Grassland, Soil and Water Research Laboratory |
| .DAT | Unknown Developer | Spillfiler | Game Data | SWAT | Grassland, Soil and Water Research Laboratory |
| .FIG | Open Source | Vektorbildefiler | Xfig Drawing | SWAT | Grassland, Soil and Water Research Laboratory |
| .GW | Grassland, Soil and Water Research Laboratory | Datafiler | SWAT Groundwater Input Data | SWAT | Grassland, Soil and Water Research Laboratory |
| .PCP | Microsoft Corporation | Utviklerfiler | Windows Installer Patch Creation Properties File | SWAT | Grassland, Soil and Water Research Laboratory |
| .PET | Larry Short, Mick Amadio and Puppy community | Komprimerte filer | Puppy Linux Install Package | SWAT | Grassland, Soil and Water Research Laboratory |
| .RCH | Grassland, Soil and Water Research Laboratory | Datafiler | SWAT Reach Output File | SWAT | Grassland, Soil and Water Research Laboratory |
| .RTE | Autodesk, Inc. | Datafiler | Revit Project Template | SWAT | Grassland, Soil and Water Research Laboratory |
| .SBS | Allegorithmic | Innstillingsfiler | Substance Package | SWAT | Grassland, Soil and Water Research Laboratory |
| .SEP | PictView software | Rasterbildefiler | Separated Image File | SWAT | Grassland, Soil and Water Research Laboratory |
| .TMP | Mozilla | Backupfiler | General Temporary File | SWAT | Grassland, Soil and Water Research Laboratory |
| .WGN | Grassland, Soil and Water Research Laboratory | Datafiler | SWAT Weather Generator Input | SWAT | Grassland, Soil and Water Research Laboratory |
| .WUS | WUSSOFT | Lydfiler | WUTG Tagged Audio File | SWAT | Grassland, Soil and Water Research Laboratory |
av 1 
