Maxima -- GPL CAS based on DOE-MACSYMA Files

You can choose one of two ways to install Maxima.

One way is to use MacPorts in order to install Maxima.
MacPorts is a system for compiling, installing, and managing open source
software.
"How_to_install_Maxima_with_MacPorts.dmg" is a compressed disc image 
file which contains the new Maxima portfile and the note which explains
how to install Maxima-5.43.0.
This way is free from Apple's quarantine.

The other way is to use a binary of Maxima made with MacPorts.
The Maxima.app is a standalone binary of Maxima on macOS.  
It includes Maxima, Xmaxima, wxMaxima, and dependencies.
"Maxima-5.43.0-VTK-macOS.dmg" is a compressed disc image file which 
includes the Maxima.app.

Be careful:
The Maxima.app is NOT free from Apple's quarantine.
MacOS does not allow the Maxima.app to be launched, because it is not 
downloaded from "App Store".
So that before installing the Maxima.app, you have to read the 
"ReadMe.rtf" file included in the compressed disc image file of Maxima.

----------------------------------------
The Maxima.app is made up of two parts.  
One part is an AppleScript application which launches Maxima.  It wraps 
shell environment variables in AppleScript.
The other part is the software of Maxima which is compiled with MacPorts.

The Maxima.app includes the following software:
  maxima-5.43.0
  sbcl-1.5.3
  wxMaxima-19.05.7 (with wxWidgets-3.1.2)
  gnuplot-5.2.7 (with Aquaterm, wxWidgets, Qt, and XQuartz)
  vtk-6.3.0 (with python)
  aquaterm-1.1.1
  python-2.7.16
  rlwrap-0.43
  tcl-8.6.8
  tk-8.6.8 (with Quartz)
  wxWidgets-3.0.4
  qt-4.8.7

They were compiled with MacPorts on macOS 10.9.5.
So I expect the Maxima.app will run on macOS 10.9.5 and later.  
But I checked that it ran on macOS 10.9.5 and 10.11.6.
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Note: wxMaxima needs jsMath TeX fonts (TeX-fonts-10.zip).
      <http://www.math.union.edu/~dpvc/jsMath/download/jsMath-fonts.html>

      MacPorts
      <https://www.macports.org/>