Language12M
Lotus Smartmaster data
File type: Various data file
Files with 12m extension could be found as part of old Lotus 1-2-3 suite in a program called SmartMaster.
What is 12m file?
File type category:
Various data file
Date updated: January 29, 2018
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.
Suggested software to open 12m file:
Associated software actions with the 12m file
Software applications that handle other tasks involving 12m files:
Lotus 1-2-3 (Microsoft Windows)