Files with pact file extension are related to the Compact Pro (Compactor) archive format.
PACT file extension - Compact Pro (Compactor) archive
What is pact file? How to open pact files?
File type specification:
The pact file extension is associated with the Compact Pro (Compactor) compression utility for older Apple Macintosh computers with Classic Mac OS operating system.
The pact file stores archived data.
Compact Pro (Compactor) is discontinued product.
This pact 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.