TMF is a file extension associated with a word processor included with Corel office productivity software package. Corel WordPerfect uses data stored in TMF files as a source of font metric data.

In order to use TMF files a Corel office package must be installed on the system. Originally developed for MS-DOS systems, Corel office suite is now also available for Microsoft Windows paltforms. The project is still actively developed. TMF files cannot be converter to other formats.