Maxima wxMaxima screenshot Developer(s) Macsyma group at Project MAC and volunteer contributors Initial release 1982 (1982) Stable release 5.42.0 / 28 September 2018 (2018-09-28) Repository sourceforge.net/p/maxima/code/ci/master/tree/ Written in Common Lisp Operating system Cross-platform Type Mathematical software License GPL Website maxima.sourceforge.net