Files with gsw file extension can be found as worksheets from old GraphShow program. Probably no longer used.
GSW file extension - GraphShow worksheet
What is gsw file? How to open gsw files?
File type specification:
The gsw file extension is mainly related to old program called GraphShow and used for its default worksheet file. No further information could be found, and this file type is most likely obsolete.
This gsw file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.
