WXMX files are associated with jest wxMaxima, a software interface for numeric and symbolic calculations with Maxima computer algebra system. Maxima was created by Andrei Vodopivec and is available for multiple platforms. It is copyrighted under the GPL license.

WXMX files store data generated while working with wxMaxima. WXMX files can be freely edited in Maxima, but cannot be converted into other file formats.