A zin file extension is related to the Zindo program. A zin file stores input data.
ZIN file extension - Zindo input data
What is zin file? How to open zin files?
File type specification:
The zin file extension is associated with semiempirical quantum-mechanics program called Zindo.
The zin files contain input data for the application.
Seems to be very rare used or obsolete format.
This zin 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.