Files with tc6 extension might be found as older spreadsheets from Calc602 program.
TC6 file extension - Calc602 spreadsheet
What is tc6 file? How to open tc6 files?
File type specification:
The tc6 file extension is related to Calc602, a spreadsheet editing program form Microsoft Windows from Software602, Inc.
Seems like both the program and the file type are obsolete by now.
This tc6 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.
