What's the complete list of file name extensions used by Mathematica? The ones I know are

Before V8


After V9:


Anything else (and their introduction time)?


1 Answer 1


Two that you left out were extension .mx (V4) and extension .wl (V10)

  • $\begingroup$ With the advent of .wl, is there a test file analogue to .mt? Is it .wlt? $\endgroup$
    – qazwsx
    Oct 15, 2014 at 5:34
  • $\begingroup$ @qazwsx. I have not encountered .wlt files. In V10, a testing notebook template was introduced to support testing, but such files are just .nb files. However, such files might make testing files with a different extension unnecessary and perhaps deprecated. $\endgroup$
    – m_goldberg
    Oct 15, 2014 at 5:54

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