An mm3 file extension is related to the MM3 chemical modeller output/input data format.
There is one other file type using
the MM3 file extension!
.mm3 - Mortgage Minder saved mortgage configuration file
MM3 file extension - MM3 chemical modeller output/input data
What is mm3 file? How to open mm3 files?
File type specification:
The mm3 file extension is related to some sort of specialized chemical modeler program and used for its output / input files.
Seems to be very rare or obsolete file format.
This mm3 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.