Open 12m file
Did your computer fail to open 12m file? We explain what 12m files are and recommend software that we know can open your 12m files.
What is 12m file?
Files with 12m extension could be found as part of old Lotus 1-2-3 suite in a program called SmartMaster.
12m file description
The 12m file extension is mainly related to Lotus 1-2-3 SmartMaster program from IBM and used for one of its default file types.
Old program used in 80s and 90s.