SCS Extractor or Game Archive Extractor is a software developed by SCS Software, with that you can unpack the game archive (.scs-Files) to develop game mods. It's not possible to repack the files with the extractor. You have to use other software like 7-Zip or WinRAR for that.
How to use Edit
The SCS Extractor can be downloaded here. You only have to drag and drop the file into the extractor menu or go to the file path via the extractor. You also have select a place where you want to extract the archive.