.TFM

.TFM file extension

This is the basic program to work with .TFM extension

WinEdt

WinEdt TeX Font Metric

WinEdt is an all-purpose text editor for Windows with support for LaTeX documents. It can be used as a front-end (integrated development environment) for compilers and typesetting systems, such as TeX, HTML, and NSIS. WinEdt's highlighting schemes can be customized for different modes and its spell checking functionality supports multilingual setups, with dictionaries for many languages... (more)

The program works with the following extensions: log, mf, fd, mp, aux, clo, lof, lot, prj, blg, def, bst, edt, dtx, ist, ilg, cls, ind, ltx, tfm, toc, idx, sty and tex